LHR - PWM

£542 Find cheap flights from London Heathrow Airport to Portland

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Portland departing on 10/2. 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.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Portland, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Portland, as well as popular online travel agencies
In the last 7 days, travellers have searched 47,107,125 times on KAYAK, and here's why:

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Cheap flight deals from London Heathrow Airport to Portland (LHR-PWM)

 
These are the cheapest deals for flights from Heathrow to Portland 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 Heathrow to Portland

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

Recent one-way flight deals from Heathrow to Portland

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

Recent last-minute flight deals from Heathrow to Portland

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

Recent direct flight deals from Heathrow to Portland

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

Cheap bus & train deals from Heathrow to Portland

Find recent round-trip train or bus tickets from Heathrow to Portland.

All round-trip flight deals to Portland

The cheapest plane tickets to Portland found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:45 - 23:57LHR-PWM
17h 12m2 stops
15:02 - 06:25PWM-LHR
10h 23m1 stop
£542Delta
Find Deal
Mon, 10 Feb - Mon, 17 Feb
10:00 - 23:57LHR-PWM
18h 57m2 stops
15:02 - 10:45PWM-LHR
14h 43m2 stops
£543Delta
Find Deal
Mon, 10 Feb - Mon, 17 Feb
17:20 - 23:57LHR-PWM
11h 37m1 stop
15:02 - 06:25PWM-LHR
10h 23m1 stop
£570Delta
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Mon, 10 Feb - Mon, 17 Feb
08:40 - 23:09LHR-PWM
19h 29m2 stops
14:55 - 13:45PWM-LHR
17h 50m2 stops
£574Delta
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Wed, 4 Dec - Wed, 11 Dec
18:00 - 18:39LHR-PWM
28h 39m1 stop
11:20 - 20:35PWM-LHR
29h 15m1 stop
£624Austrian Airlines
Find Deal
Sun, 16 Mar - Sun, 23 Mar
09:00 - 22:50LHR-PWM
18h 50m3 stops
17:14 - 11:50PWM-LHR
13h 36m2 stops
Wed, 4 Dec - Wed, 11 Dec
06:00 - 22:50LHR-PWM
21h 50m3 stops
16:30 - 20:35PWM-LHR
23h 05m3 stops
Wed, 4 Dec - Wed, 11 Dec
16:20 - 23:59LHR-PWM
12h 39m1 stop
05:20 - 11:05PWM-LHR
24h 45m1 stop
£924United Airlines
Find Deal
Sun, 22 Dec - Wed, 1 Jan
18:00 - 23:59LHR-PWM
34h 59m2 stops
05:20 - 06:40PWM-LHR
20h 20m1 stop
£972United Airlines
Find Deal
Sun, 22 Dec - Wed, 1 Jan
11:25 - 23:01LHR-PWM
16h 36m2 stops
16:15 - 10:10PWM-LHR
12h 55m2 stops
£1,060American Airlines
Find Deal
Sun, 22 Dec - Wed, 1 Jan
06:40 - 23:59LHR-PWM
22h 19m2 stops
£1,887Scandinavian Airlines
Find Deal
Mon, 25 Nov
06:40 - 23:59LHR-PWM
22h 19m2 stops
£1,890Scandinavian Airlines
Find Deal
Mon, 25 Nov
12:05 - 18:46LHR-PWM
11h 41m1 stop
£2,287Austrian Airlines
Find Deal
Mon, 25 Nov
10:00 - 18:46LHR-PWM
13h 46m1 stop
£2,291Austrian Airlines
Find Deal
Mon, 25 Nov

Flights from Heathrow to Portland - Travel Insights & Trends

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

What is the cheapest month to fly from London Heathrow Airport to Portland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London Heathrow Airport to Portland, 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 Heathrow Airport to Portland is March, where tickets cost £560 on average. On the other hand, the most expensive months are December and August, where the average cost of tickets is £878 and £852 respectively.

How far in advance should I book a flight from London Heathrow Airport to Portland?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London Heathrow Airport to Portland, 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 Heathrow Airport to Portland, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 102 days before departure.

Good to know - Cheap tickets from London Heathrow Airport to Portland

Low season

November

High season

December

Cheapest flight

£542
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (44% more expensive on average)
Flight from London Heathrow Airport to Portland

When to book flights from Heathrow to Portland

Are your dates flexible? Find out the best times to travel from Heathrow to Portland 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 London Heathrow Airport to Portland flights

  • What is the cheapest flight from London Heathrow Airport to Portland?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Portland was £2,390 for a one-way ticket and £687 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to Portland?

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at Portland, also known as Portland.

  • Which aircraft models fly most regularly from London Heathrow Airport to Portland?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Portland?

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

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Portland?

    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 Heathrow Airport to Portland.

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

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

  • What is the Hacker Fare option on flights from London Heathrow Airport to Portland?

    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 Portland with an airline and back to London Heathrow Airport with another airline.

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

    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 Portland from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 airlines serving from Heathrow to Portland

 
See real verified KAYAK customer reviews for airlines flying from London to Portland. 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 Heathrow to Portland? 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.
7.8
KLMOverall score based on 1350 reviews
8.4Crew
7.3Food
7.2Entertainment
7.7Comfort
7.9Boarding
Airline reviews

There was fog in Amsterdam so many flights were delayed because of the weather. Air France knew that the flight would be delayed by two hours but still boarded the plane on time. Instead of letting the passengers wait at the gate we were crammed into the plane. It was uncomfortable. No refreshments were given. I couldn’t charge my devices onboard.

2.0 MediocreShereen, Oct 2024CDG - AMS
Read more KLM reviews

There was fog in Amsterdam so many flights were delayed because of the weather. Air France knew that the flight would be delayed by two hours but still boarded the plane on time. Instead of letting the passengers wait at the gate we were crammed into the plane. It was uncomfortable. No refreshments were given. I couldn’t charge my devices onboard.

Seats were comfortable crew members support was very good but AVML ordered or selected by us needs a lot of improvement.

Transavia flight, was booked as KLM but i couldnt select seat or access boarding pass with KLM at all. Crammed seating and very no frills experience all around. First and last time.

Seats were nice and comfy. Crew was polite and attentive. Business class is awesome and worth the money.

Flight left a few minutes late, but that's it. I wish the seats could be wider and recline more.

It’s chaotic at the bus stop outside of the airport because of the Uber meeting point. You need to be alert and look for the KLM bus which is not branded or labeled. Incorrect information was provided to go to gate 28, when in fact the bus was at gate 27. On the plus side the bus left early and arrived early to Ottawa.

Great flight because I upgraded to Premium Comfort. Made a huge difference in the experience.

The baggage service at Malpensa was the worst ever. We wanted for over an hour without any information, they broke my suitcase, and the services of the local luggage services company was below any usual services level of a KLM partner.

The flight was great, the only reason for middle scores on entertainment and food is that it was a short flight so not included (but snacks were served including alcoholic beverages free of charge). I would definitely recommend KLM.

Was trying to change a flight but told that Canadian and local klm systems do not interact so they could not access my booking. Overall I like klm a lot but if it was important to change flights I would be very frustrated.

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.

Smooth boarding and friendly crew. Unfortunately as soon as we boarded the unit that provides air circulation failed. The pilot informed us and requested maintenance technicians to check it out. The plane became uncomfortably warm without any fresh air coming in. Plus the repair delayed our departure. I am glad the maintenance crew were able to fix the problem. I also was without use of my tv monitor for the first 1/3rd of the trip.

Communication with the customer and stay is important. Staff off with a minor inconvenience but it worked out of course. Also this was a very old Mint Class plane. They snuck this one in on us. The updated aircraft are much better.

The flight itself was fine, but the boarding process was extremely frustrating. There is no one scanning boarding passes - passengers just scan themselves and enter the jetway. By the time my husband and I got on the plane and were halfway to our seats they determined there were too many bags on the plane and everything at that point needed to be checked. This created a lot of unnecessary chaos. They should have alerted people before getting on the plane that they would need to start checking bags instead of waiting until people were already on the plane.

The best flight I’ve had in a while. The plane was like 25% capacity, if that. Smoothest boarding and deplaning process I’ve ever experienced. Wish all flights were this smooth.

Did not enjoy this flight at all. All of my coworkers flew delta and I chose JetBlue because I really value how simple the WiFi and entertainment is and this flight I didn’t get either. Crew staff was unsympathetic to my system not working, everyone I asked for help with was extremely bothered by my request for help.

I like their airplanes because they have plenty of legroom in their seats they always work with me if I have a change of plans on my tickets courteous and I always feel safe flying with them.

I paid for the service of having the right to choose my seat and it was not like that, they put me where they wanted and I explained to one of the staff that they were before boarding and they were very rude. I am traveling with the family and they put us in separate seats.

Little snafu at boarding. Staff communicated with gate poorly. Flight attendant was rude making disembark early. This was an older mint class. Needs an overhaul for sure. Food was good. The male flight attendant was really nice.

My encounter with the entertainment services provided on board was moderate; the functionality of the Wi-Fi connection was either sluggish or nonoperational, while the display screens were antiquated and suffered from poor visibility. On the positive side, the cabin exuded a sense of expansiveness, and the crew exhibited amiable and accommodating behavior throughout the journey.

Everything was great except for some reason crew and ground crew could not figure out how to deal with an electric wheelchair and it delayed us 20-30mins. Was pretty frustrating for passengers and the captain.

There was no USB plug in my section of the plane. So I could not charge my phone. Also, there was no screen to watch movie or anything like that. Wish I had known that in advance, I would’ve brought my iPad.

Staff was generally seeming stressed out and was a bit rude and slow. Plane left late. Pilot was very well-spoken.

Service was great, we had bad departure and bad arrival due to weather, but that we cannot control. Hats off to the pilot!

The flight attendants were unhelpful. It was a packed flight, and usually a flight attendant would help find a spot in the bin for your carry on or shift things around. Neither made any effort to do so. Also, I had to then check my bag. I was told it would be on the carousel in YYZ, but it came up on the jetway. So lucky I saw others standing around for their bags. I would have walked straight past this and on to the carousel. They could have at least told me that they had given me wrong information. Very unsatisfactory.

Made all groups except 2 check despite ample bin space. Inflight WiFi and entertainment didn’t work most of the time.

The check-in process is not the best They should have agents in site to help with any problem especially a rebook. Why does one have to get on the phone when there were at least 8 agents around that could have help?! Flying is stressful as it is and having someone willing to do their customer service will ease some of the stress.

The crew was outstanding. And the food was surprisingly good. The chicken and the pasta dish were both delicious and I was supposed with a pizza twist near Landing. We hit a lot of turbulence and the crew was calm and kind. Loved the TV in screen. Tons of new releases.

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.

boarding was uneventful. Snack was pathetic. A tiny fruit bar. Entertainment was limited to just select movies on your own tablet or phone. No live TV. I recently flew Jetblue and they had unlimited snacks and live satellite TV the entire flight. My seat was an exit seat, 20A. It was super uncomfortable. It felt cramped and the middle seat was taken up by a large woman who pushed into my shoulder and arm. Horrible flight.

They canceled our flight and left us stranded to figure it out

Book cheap flights from London to Portland

Cheapest flights to Portland 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 Portland found on KAYAK in the last 72 hours.
25/11Mon
2 stopsScandinavian Airlines
22h 19mLHR-PWM
£1,886
25/11Mon
2 stopsScandinavian Airlines
22h 19mLHR-PWM
£1,890
25/11Mon
1 stopAustrian Airlines
11h 41mLHR-PWM
£2,287
25/11Mon
1 stopAustrian Airlines
13h 46mLHR-PWM
£2,291

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