LON - DEN

£245 Find cheap flights from London to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Denver departing on 1/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags

Search hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Denver.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Denver.
In the last 7 days, travellers have searched 47,107,125 times on KAYAK, and here's why:

Save 31% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from London to Denver (LON-DEN)

 
These are the cheapest deals for flights from London to Denver currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from London to Denver

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from London to Denver.

Recent one-way flight deals from London to Denver

Only flying one-way? Below are some of the best one-way flight deals from London to Denver found on KAYAK recently.

Recent last-minute flight deals from London to Denver

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from London to Denver.

Recent direct flight deals from London to Denver

The latest deals for direct flights from London to Denver so you can sit back and relax without the need for a layover.

Cheap bus & train deals from London to Denver

Find recent round-trip train or bus tickets from London to Denver.

All round-trip flight deals to Denver

The cheapest plane tickets to Denver found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
07:40 - 09:22LGW-DEN
32h 42m2 stops
13:20 - 10:35DEN-LGW
14h 15m1 stop
Mon, 13 Jan - Tue, 21 Jan
14:00 - 15:58LGW-DEN
32h 58m1 stop
22:41 - 10:35DEN-LGW
28h 54m1 stop
Mon, 13 Jan - Mon, 27 Jan
11:55 - 18:05LGW-DEN
13h 10m1 stop
15:40 - 10:55DEN-LGW
12h 15m1 stop
£446Icelandair
Find Deal
Fri, 28 Feb - Fri, 7 Mar
11:55 - 18:05LGW-DEN
13h 10m1 stop
15:40 - 10:55DEN-LGW
12h 15m1 stop
£447Icelandair
Find Deal
Fri, 28 Feb - Fri, 7 Mar
07:30 - 13:40LHR-DEN
13h 10m1 stop
17:35 - 09:40DEN-LHR
9h 05mdirect
£530Lufthansa
Find Deal
Tue, 4 Feb - Tue, 18 Feb
07:30 - 13:40LHR-DEN
13h 10m1 stop
17:35 - 09:40DEN-LHR
9h 05mdirect
£541Lufthansa
Find Deal
Tue, 28 Jan - Tue, 25 Feb
13:00 - 21:50LHR-DEN
15h 50m1 stop
18:35 - 09:40DEN-LHR
9h 05mdirect
£556United Airlines
Find Deal
Wed, 5 Mar - Mon, 17 Mar
13:00 - 21:35LHR-DEN
15h 35m1 stop
17:35 - 09:40DEN-LHR
9h 05mdirect
£556United Airlines
Find Deal
Mon, 13 Jan - Thu, 23 Jan
11:55 - 19:16LHR-DEN
14h 21m1 stop
14:20 - 08:15DEN-LHR
10h 55m1 stop
£566British Airways
Find Deal
Mon, 10 Feb - Thu, 20 Feb
13:50 - 22:06LHR-DEN
15h 16m1 stop
12:40 - 12:10DEN-LHR
16h 30m2 stops
£576British Airways
Find Deal
Mon, 13 Jan - Mon, 27 Jan
14:35 - 09:12LGW-DEN
49h 37m2 stops
Sat, 1 Mar
07:40 - 22:42LGW-DEN
22h 02m3 stops
Mon, 13 Jan
07:40 - 22:42LGW-DEN
22h 02m3 stops
Mon, 13 Jan
14:00 - 23:34LGW-DEN
16h 34m1 stop
Sat, 25 Jan
20:40 - 18:05LHR-DEN
28h 25m1 stop
£369Icelandair
Find Deal
Sun, 8 Dec
20:40 - 18:05LHR-DEN
28h 25m1 stop
£380Icelandair
Find Deal
Sun, 8 Dec
06:30 - 13:40LHR-DEN
14h 10m1 stop
£573Lufthansa
Find Deal
Tue, 10 Dec
20:15 - 14:40LHR-DEN
25h 25m1 stop
£583Lufthansa
Find Deal
Thu, 28 Nov
11:35 - 14:25LHR-DEN
9h 50mdirect
£618United Airlines
Find Deal
Thu, 28 Nov
08:20 - 21:18LHR-DEN
19h 58m2 stops
£623British Airways
Find Deal
Wed, 4 Dec
20:40 - 18:05LHR-DEN
28h 25m1 stop
15:40 - 19:30DEN-LHR
20h 50m1 stop
£538Icelandair
Find Deal
Mon, 25 Nov - Mon, 2 Dec
16:55 - 17:40LGW-DEN
31h 45m1 stop
19:35 - 21:30DEN-LGW
18h 55m1 stop
£631Turkish Airlines
Find Deal
Mon, 25 Nov - Mon, 2 Dec
17:45 - 17:40LHR-DEN
30h 55m1 stop
19:35 - 15:05DEN-LHR
36h 30m1 stop
£635Turkish Airlines
Find Deal
Sat, 23 Nov - Tue, 3 Dec
11:30 - 17:40LHR-DEN
37h 10m1 stop
19:35 - 15:05DEN-LHR
36h 30m1 stop
£635Turkish Airlines
Find Deal
Sat, 23 Nov - Tue, 3 Dec
07:40 - 14:40LHR-DEN
14h 00m1 stop
17:35 - 09:40DEN-LHR
9h 05mdirect
£725Lufthansa
Find Deal
Mon, 25 Nov - Mon, 2 Dec
11:35 - 14:25LHR-DEN
9h 50mdirect
17:35 - 09:40DEN-LHR
9h 05mdirect
£733Lufthansa
Find Deal
Mon, 25 Nov - Mon, 2 Dec
11:35 - 14:25LHR-DEN
9h 50mdirect
17:35 - 09:40DEN-LHR
9h 05mdirect
£842United Airlines
Find Deal
Mon, 25 Nov - Tue, 3 Dec
13:45 - 08:36LHR-DEN
25h 51m1 stop
11:25 - 07:10DEN-LHR
12h 45m1 stop
£857United Airlines
Find Deal
Sat, 23 Nov - Sun, 1 Dec
12:25 - 15:25LHR-DEN
10h 00mdirect
17:30 - 09:35DEN-LHR
9h 05mdirect
£3,560British Airways
Find Deal
Mon, 25 Nov - Mon, 2 Dec
19:00 - 14:37LHR-DEN
26h 37m2 stops
00:59 - 12:20DEN-LHR
28h 21m1 stop
£11,094Iberia
Find Deal
Fri, 22 Nov - Sat, 30 Nov
12:25 - 15:25LHR-DEN
10h 00mdirect
17:30 - 09:35DEN-LHR
9h 05mdirect
Sat, 25 Jan - Sat, 8 Feb
11:35 - 14:25LHR-DEN
9h 50mdirect
17:35 - 09:40DEN-LHR
9h 05mdirect
£534Lufthansa
Find Deal
Tue, 4 Feb - Tue, 18 Feb
11:35 - 14:25LHR-DEN
9h 50mdirect
17:35 - 09:40DEN-LHR
9h 05mdirect
£535Lufthansa
Find Deal
Tue, 4 Feb - Tue, 18 Feb
11:35 - 14:25LHR-DEN
9h 50mdirect
18:35 - 09:40DEN-LHR
9h 05mdirect
£568United Airlines
Find Deal
Tue, 4 Mar - Mon, 17 Mar
12:25 - 15:25LHR-DEN
10h 00mdirect
17:30 - 09:35DEN-LHR
9h 05mdirect
£573Finnair
Find Deal
Mon, 10 Feb - Thu, 20 Feb
11:35 - 14:25LHR-DEN
9h 50mdirect
17:35 - 09:40DEN-LHR
9h 05mdirect
£582United Airlines
Find Deal
Wed, 4 Dec - Tue, 10 Dec
12:25 - 15:25LHR-DEN
10h 00mdirect
18:35 - 10:35DEN-LHR
9h 00mdirect
£591British Airways
Find Deal
Wed, 26 Feb - Thu, 24 Jul
12:25 - 15:25LHR-DEN
10h 00mdirect
17:30 - 09:35DEN-LHR
9h 05mdirect
£603Finnair
Find Deal
Thu, 6 Feb - Thu, 20 Feb
12:25 - 15:25LHR-DEN
10h 00mdirect
17:30 - 09:35DEN-LHR
9h 05mdirect
£605British Airways
Find Deal
Sat, 11 Jan - Fri, 7 Mar
11:35 - 14:25LHR-DEN
9h 50mdirect
17:35 - 09:40DEN-LHR
9h 05mdirect
£643Brussels Airlines
Find Deal
Thu, 5 Dec - Fri, 13 Dec

Flights from London to Denver - Travel Insights & Trends

Get data-powered insights and trends into flights from London to Denver to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest London to Denver flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for one-way flights from London to Denver.
Our data shows that the cheapest route for a one-way flight from London to Denver cost £608 and was between London Heathrow Airport and Denver. On average, the best prices are found if you fly this route. The average price for a return flight for this route is £548.

What’s the cheapest day of the week to fly from London to Denver?

The average price of all flights from London to Denver clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Denver on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from London to Denver. For your return ticket, we recommend flying on a Monday and avoiding Saturdays for the best deals.

What is the cheapest month to fly from London to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London to Denver is November, where tickets cost £551 on average. On the other hand, the most expensive months are August and July, where the average cost of tickets is £842 and £816 respectively.

How far in advance should I book a flight from London to Denver?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from London to Denver, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 78 days before departure.

Good to know - Cheap tickets from London to Denver

Low season

January

High season

September

Cheapest flight

£245
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly and prices are also 10% lower on average.
Flight from London Gatwick Airport to Denver

When to book flights from London to Denver

Are your dates flexible? Find out the best times to travel from London to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to Denver

  • Can I fly from London to Denver directly?

    The airlines that provide a direct flight between Denver and London are Iberia, Lufthansa and Finn Air. They are usually more expensive than the journeys with layovers – but you can pick between saving money and saving time – there is something for everyone’s preference.

  • Are there any hotels at Denver Airport (DEN)?

    There are both low-budget and international five star hotels near Denver Airport so there is a great amount of choice for every traveller arriving late at night.

  • How do I get to the city centre from Denver International Airport?

    There are several ways to travel from the airport to the city centre. The Regional Transportation District (RTD) Line A train has frequent service from Denver Int’l to Union Station, which takes about 40min, and the authority also operates several bus lines serving the metropolitan area. Ride share services Uber and Lyft are also additional options as are taxicabs and car hire services.

  • Are there car parking options at London City Airport?

    Yes, there are parking garages at London City Airport if you prefer not to use public transport. There is an Orange Zone close to Arrivals and Check-In for pickups and drop-offs but if you require holiday or long-term parking, there is an onsite garage a short walk from the entrance to the terminal.

  • What places to eat are there at Denver International Airport?

    International passengers arriving at Concourse A after their flight from London to Denver have a good variety of food choices if they are hungry. Denver Chophouse offers gluten-free, vegetarian fare while Brother’s BBQ has a mouth-watering menu of ribs, chicken and other meats. Several fast food and café outlets are also available.

  • What are some retail therapy choices at Denver International Airport?

    International Concourse A has a plethora of souvenir, electronics and apparel shops for passengers to browse after their flight from London to Denver. Colorado Limited carries locally made apparel and Greetings from Colorado has a good selection of souvenirs and other gift ideas, while Denver Duty Free is your one-stop shop for tobacco, alcohol and cosmetics.

  • What is the cheapest flight from London to Denver?

    In the last 3 days, the lowest price for a flight from London to Denver was £311 for a one-way ticket and £504 for a return.

  • Which airports will I be using when flying from London to Denver?

    London is served by 4 major airports and there is only 1 main airport in Denver. You will leave London from one of these airports: London City, London Gatwick, London Heathrow, or London Luton. You will be arriving at Denver Intl.

  • Which airlines offer Wi-Fi service onboard planes from London to Denver?

    Only KLM offers inflight Wi-Fi service on the London to Denver flight route.

  • Which aircraft models fly most regularly from London to Denver?

    The Airbus A350-1000 is the aircraft model that flies most regularly on the London to Denver flight route.

  • Which airline alliances offer flights from London to Denver?

    oneworld, and Star Alliance are the airline alliances operating flights between London and Denver, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from London to Denver?

    There are direct flights from London to Denver on a daily basis.

  • Which is the best airline for flights from London to Denver, Finnair or Austrian Airlines?

    The two airlines most popular with KAYAK users for flights from London to Denver are Finnair and Austrian Airlines. With an average price for the route of £640 and an overall rating of 7.7, Finnair is the most popular choice. Austrian Airlines is also a great choice for the route, with an average price of £619 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from London to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Denver with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from London to Denver

  • Looking for a cheap flight from London to Denver? 25% of our users found flights on this route for £650 or less one-way and £632 or less round-trip.
  • There are five airports in the Greater London Area – London City (LCY/EGLC), Gatwick (LGW), Luton (LTN/EGGW), Heathrow (LHR) and Stansted (STN/EGSS), and you can complete your journey to Denver, Colorado starting from all of those except Luton. There are multiple airlines you can choose for this trip, depending on your needs and budget. There are three airlines providing a direct flight on this route – Lufthansa, Finn Air and Iberia, all of which depart from Heathrow and are slightly more expensive. There are more choices with one or multiple layovers that are completed by Jet Blue, Virgin Atlantic, Frontier and other, which tend to take a lot longer but will only cost you a fraction of the price.
  • We know that getting to any airport in London can cost you a lot of travelling, stress and planning. If you want to unwind before your trip to Denver and begin your holiday experience before departure, we recommend booking a lounge at one of the London airports. Lounges usually feature food and refreshments, relax zones, entertainment areas, massage chairs and much more.
  • If you often find yourself short of time before your travels, it might be a good idea to book a fast-track ticket with your airport ahead of time for the day of your flight. Skipping the long queues can help you have peace of mind and save you a great amount of time before flying.
  • Denver International Airport (DEN) is the largest in the United States by area and is the primary gateway serving the states of Colorado and Wyoming. The airport also serves as the main hub for several US carriers, including United Airlines and Southwest Airlines, as well as the low cost airlines Boutique Air and Frontier Airlines.
  • Have an early morning flight from London to Denver? If so, you can spend the night at an airport hotel and forgo the necessity of a rush hour commute. London’s Heathrow Airport (LHR) has two onsite hotels for your consideration: Sofitel London Heathrow is located at Terminal 5, while Hilton London Heathrow Airport is located at Terminal 4.
  • After your flight from London to Denver, you can take advantage of the opportunity to convert your pounds to dollars. Public Service Credit Union offers full banking services, including travellers cheques and money orders, and is located on Level 6 of the Jeppesen Terminal. Otherwise, World Wide Money Exchange operates three offices at the airport.
  • If you’re flying from London City Airport (LCY) and travelling with children, you’ll be pleased to know that the airport has a play area between Gates 5 and 6 at the Terminal and there are baby changing facilities near Gates 5 and 23 and also at the First Aid room in the Main Concourse if you’re travelling with infants.
  • First time visitors on flights from London to Denver should locate the Tourist Information booth on Level 5 of the Jeppesen Terminal for travel brochures or last-minute hotel reservation assistance. You can also stop one of the airport’s Ambassador Volunteers, who are easily recognisable in the blue plaid vests, or use one of the white courtesy phones for customer service.
See more tips

Flights from London to Denver: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from London to Denver 
PhilFlew with British AirwaysLHR-DENAug 2024
Sit in the front part of the plane if you want service.
Verified travelerFlew with British AirwaysLHR-DENDec 2023
We always fly BA or AA. They have a direct flight to and from Denver. We prefer British airlines and always fly through Heathrow It’s a massive airport but pretty easy to navigate even from the train station and the underground

Prefer to fly direct from London to Denver?

Find which airlines fly direct from London to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

London to Denver Intl

Monday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Tuesday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Wednesday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Thursday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Friday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Saturday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Sunday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

See more direct flights

Direct returns

Denver Intl to London

Monday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Tuesday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Wednesday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Thursday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Friday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Saturday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

Sunday

Aer Lingus, Air Canada, American Airlines, +8 more

Aer Lingus, Air Canada, +9 more

See more direct flights
See more direct flights

Top 5 airlines serving from London to Denver

 
See real verified KAYAK customer reviews for airlines flying from London to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
FinnairOverall score based on 1300 reviews
7.7Boarding
7.5Comfort
6.9Entertainment
6.7Food
8.2Crew
Airline reviews

Crew were professional and responsive. Food was mediocre and breakfast could do with revampinmg

8.0 ExcellentAnonymous, Nov 2024HEL - ICN
Read more Finnair reviews

Crew were professional and responsive. Food was mediocre and breakfast could do with revampinmg

Food was very ordinary for premium economy, very small portions.

i dont know WHY they call it business class. the seats are NOT significantly wider than economy seats, they just do not let the middle seats be beepked to give the illusion of more space between passengers. the seats do NOT recline any more than economy seats either. the only real difference is the full meal served to business (vs none for economy). I would rather have a wider, lie flat ACTUAL business class seat with no food for a 3 hr flight. this was pretty disappointing to say the least.

There wore nice leather like sits, in my opinion seats lay out bit tight . Crew was great they did averything possible to make averywone comfortable as possible, food was, think worst I ever head on flight, head chicken and yellow rice. Ice cream was a nic treat.

Our previous flight was delayed but they waited for us to board.

Flight was delayed, short time connection to next flight but we make it, service was good, worth to fly just to try thair on board blueberry juce. Eccelent communication with airline.

My American Airlines flight was deleted and you guys never let me know

The entertainment system did not work. And we waited 45 minutes in our seats after we landed before we got to the gate

It was a pleasure definitely going with Iberia on my future travels

Our connecting flight was cancelled and it took us 15 hours to reach our destination.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

I was at the back of the plane with earphones, and I could still hear the chatty flight attendants; I wasn't able to sleep at all.

Flight was 3 1/2 hour delayed with no credit or meal vouchers

United airlines was top for my last trip in every way

late departure due to some unspecified issue with ventilating the cabin. They got it running but it was FREEZING for the whole flight. I asked for a blanket but they didn't provide one. They could not turn up the heat. it was quite miserable.

Horrible; seating was atrocious - inadequate leg room and seat width tight even for a small individual. Profits shouldn’t be everything!

Liked that we left on time for each flight. Snacks not the best, but we're okay.

It was fine. The flight attendant appeared to be in a bad mood but everything was fine.

Icelandair flight was excellent. The checkin and security arrangements for Saga Premium passengers at Newark was very poor - our checkin opened much later than the normal and our security queue simply led us to the back of the normal queue. Someone was having a laugh surely!

Never took flight. See previous comment on trip from Boston to Reykjavik. Used a different airline that i had to find and book.

One of the worst airlines I ever flew. Boarding is a disaster, they are always late, the planes are overly crowded. Everyone on my flight lost their connection because they were 2h late. Reykjavik is also not the best airport out there.

My only area of issue was the flight was rather warm and the knobs for cool air didn't allow much cool air to come through. Everything else was great.

Been travelling for 2mo. And when you meet flight Attendants that love their jobs you can just tell. And makes flying with them worth another flight in the future!!

Good, but I feel there should be a separate boarding line for seniors

Easy check in and boarding. Staff pleasant and helpful. Will continue to fly with Iceland air. Aircraft clean

Plane left an hour late and missed our connecting flight. Your service center was closed ao Alaska Airlines could not change the ticket. Thus we missed the chance to get out that night to San Jose. This is a major operational blunder.

Well! They got me as far as Iceland, let me wait around at the airport since my next flight had either left or canceled, finally gave me my luggage, and sent me to wait quite some time with seven other people for a ride to a hotel. At the hotel we got a chef's salad, a nice room for the night which unfortunately had feather pillows and duvet (allergies), a really great and spectacular buffet for breakfast (small but stunning), taxis back to the airport for the 9:30 Delta flight back to Minneapolis. The Delta flight has free food and liquor included which Icelandair does not. All in all, it falls far short of my worst ever United flight to SGN. Icelandair did change my reservation after my roommate tested positive for COVID and we canceled our plans to travel around Iceland, but the charges were fairly hefty. I had trouble contact Kayak's agents to discuss changing my reservations and finally contacted Icelandair who changed them. (I used their contact form and put in several requests for call backs.) Of course, they called just after I made the change with Icelandair.

Flight was delayed. They did a terrible job rebooking me. Agent on the ground was useless. The partner airline who ran the plane was able to help me but Iceland air was useless

Liked - efficiency of boarding with 2 jetways. Checkin was with kiosks with helpful and plentiful workers to help with the process. Munich airport security was very automated, efficient and effective. Free wine and beer! Cons - food was only okay in economy class. Plane bathrooms could have been cleaner.

Disappointing. Too many let-downs, in delays and communication, by both Lufthansa and Discover to put in an email. I am resigned to the fact that this is what I should expect from all airlines. Unfortunately.

Crew were professionals. However, the plane seats are too small -essentially there is no space to move around which for so many hours is almost inhuman but certainly unacceptable. Same with the bad quality of food and the fact that you need to purchase Wi-Fi

Sorry, I’m not a fan of United. The seats are just too cramped and uncomfortable if you are traveling very far.

I think it was a United A380 plane. The trip from Munich to Denver was about 12 hours and the preferred economy seat I paid $75 for was very cramped. The crew was nice but I was so uncomfortable and getting up to walk around didn’t really help. My legs were swollen for 4 days afterward. I would think on such a long trip the seats would have more room. I would have gone 1st class but it was 3-4 times more expensive. I won’t fly anywhere far away again. My last experience with Lufthansa was great to Italy and back, but this time I could swear everything was United and not good.

Crew were friendly and very helpful Plane was clean and the legroom is standard. Overall a good flight, no complaints.

Not good. They charged an additional $70 to check a bag we had already paid for on line with Lufstansa

This flight went smoothly and the economy plus free upgrade worked very well.

The hot towels before the second meal was an unexpected surprise. The crew was attentive and personable, and that’s a lot on a nine hour flight. And the hot pretzels were a kind of “auf wiedersehn “ to Germany.

Upgraded to business class and it was worth every dollar! The connection in Denver was way too tight time wise and going through customs there plus re-visiting security screen again caused me to miss my connecting flight. KAYAK should not allow that tight of connection on international flights.

Flight was fine, food better than anticipated and flight attendants were helpful and friendly.

Our headphone plug is broken, we can not enjoy our entertainment, especially traveling with 5 year old who like to watch movie

Pleasant, attentive and efficient flight attendants. Boarding process and seat selection easy. No internet on transatlantic flight. Extremely uncomfortable, rigid seat.

The seats of the Boeing 787-10 Dreamliner were ridiculously uncomfortable. I was on 10 flights during this vacation and this plane was super uncomfortable both times I was on one whereas all of the others were perfectly fine. Additionally, these planes do not have any air vents that passengers can control, the climate is entirely controlled by the crew which made for an extremely uncomfortable temperature for the duration. The flight attendants tried to make everyone happy with the temperature but several people you could tell were excessively warm and just wanted a bit of airflow.

Don't fly thru London Awful and huge U need 4 hrs to transfer cuz u have to tale buses to and fro from airplanes Bad business

Staff with low service level, forgetful. Temperature at 15 C and after asking twice to raise the temperature the crew did nothing.

They had about 20-25 people overbooked. Including me. Why is this?? I was put on a flight to NC an hour later with a 4 hour layover. I was supposed to be home at 1045am instead i was home at 7:30pm. An extra day to pay for dog care.

Boarding is not controlled as groups called was not enforced

The plane was clean. The crew were lovely. Food was good - but seat 1D is a poor location. - the crews cupboard is right near your feet and they visited them frequently swishing the curtain from the galley onto my feet everytime also creating a swish of cold air each time & then slamming the door.

Horrible food and uncomfortable plane. One toilet was out of service.

Book cheap flights from London to Denver

Cheapest flights to Denver from London found in 2024 and 2025

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to Denver found on KAYAK in the last 72 hours.
1/3Sat
2 stops
49h 37mLGW-DEN
£245
13/1Mon
3 stops
22h 02mLGW-DEN
£262
13/1Mon
3 stops
22h 02mLGW-DEN
£263
25/1Sat
1 stop
16h 34mLGW-DEN
£264
8/12Sun
1 stopIcelandair
28h 25mLHR-DEN
£369
8/12Sun
1 stopIcelandair
28h 25mLHR-DEN
£380
10/12Tue
1 stopLufthansa
14h 10mLHR-DEN
£573
28/11Thu
1 stopLufthansa
25h 25mLHR-DEN
£583
28/11Thu
directUnited Airlines
9h 50mLHR-DEN
£618
4/12Wed
2 stopsBritish Airways
19h 58mLHR-DEN
£623

Search by stops

Search by airline

Search by price

Last minute flights from London to Denver

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to Denver that are departing in the next 10 days.
25/11Mon
multi-stopIcelandair
28h 25mLHR-DEN
2/12Mon
multi-stopIcelandair
20h 50mDEN-LHR
£538
25/11Mon
multi-stopTurkish Airlines
31h 45mLGW-DEN
2/12Mon
multi-stopTurkish Airlines
18h 55mDEN-LGW
£631
23/11Sat
multi-stopTurkish Airlines
30h 55mLHR-DEN
3/12Tue
multi-stopTurkish Airlines
36h 30mDEN-LHR
£635
23/11Sat
multi-stopTurkish Airlines
37h 10mLHR-DEN
3/12Tue
multi-stopTurkish Airlines
36h 30mDEN-LHR
£635
25/11Mon
multi-stopLufthansa
14h 00mLHR-DEN
2/12Mon
directLufthansa
9h 05mDEN-LHR
£725
25/11Mon
directLufthansa
9h 50mLHR-DEN
2/12Mon
directLufthansa
9h 05mDEN-LHR
£733
25/11Mon
directUnited Airlines
9h 50mLHR-DEN
3/12Tue
directUnited Airlines
9h 05mDEN-LHR
£842
23/11Sat
multi-stopUnited Airlines
25h 51mLHR-DEN
1/12Sun
multi-stopUnited Airlines
12h 45mDEN-LHR
£857
25/11Mon
directBritish Airways
10h 00mLHR-DEN
2/12Mon
directBritish Airways
9h 05mDEN-LHR
£3,560
22/11Fri
multi-stopIberia
26h 37mLHR-DEN
30/11Sat
multi-stopIberia
28h 21mDEN-LHR
£11,094

Search by stops

Search by airline

Search by price

Everything you need to know for your flight from London to Denver

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.