LHR - PWM

£515 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 24/4. 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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Search hundreds of travel sites at once for deals on flights to Portland

 
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 41,299,237 times on KAYAK, and here's why:

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Cheap Flight Deals from London Heathrow Airport to Portland (LHR-PWM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London Heathrow Airport to Portland that are departing in the next months. 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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
07:25 - 16:40LHR-PWM
14h 15m1 stop
17:35 - 09:30PWM-LHR
10h 55m1 stop
£515JetBlue
Find Deal
jeu., 24 avr. - lun., 28 avr.
07:25 - 16:40LHR-PWM
14h 15m1 stop
06:10 - 20:45PWM-LHR
9h 35m1 stop
£545JetBlue
Find Deal
jeu., 24 avr. - dim., 27 avr.
07:30 - 16:52LHR-PWM
14h 22m2 stops
16:10 - 11:15PWM-LHR
14h 05m1 stop
£565United Airlines
Find Deal
mer., 15 janv. - mer., 22 janv.
10:00 - 22:30LHR-PWM
17h 30m1 stop
11:36 - 08:25PWM-LHR
15h 49m1 stop
mer., 15 janv. - mer., 22 janv.
09:05 - 22:30LHR-PWM
42h 25m2 stops
11:36 - 06:55PWM-LHR
14h 19m1 stop
£594Austrian Airlines
Find Deal
jeu., 16 janv. - jeu., 23 janv.
09:05 - 22:30LHR-PWM
42h 25m2 stops
11:36 - 14:05PWM-LHR
21h 29m2 stops
£601Austrian Airlines
Find Deal
jeu., 16 janv. - jeu., 23 janv.
09:30 - 23:18LHR-PWM
18h 48m2 stops
12:25 - 06:20PWM-LHR
12h 55m1 stop
£606Lufthansa
Find Deal
ven., 25 avr. - lun., 28 avr.
16:00 - 23:18LHR-PWM
12h 18m1 stop
15:28 - 07:15PWM-LHR
10h 47m1 stop
£653United Airlines
Find Deal
ven., 25 avr. - dim., 27 avr.
08:55 - 23:10LHR-PWM
19h 15m3 stops
06:00 - 08:30PWM-LHR
21h 30m2 stops
mer., 15 janv. - mer., 22 janv.
11:45 - 23:34LHR-PWM
16h 49m2 stops
14:35 - 08:05PWM-LHR
12h 30m1 stop
£1,705KLM
Find Deal
ven., 25 avr. - dim., 27 avr.

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 round-trip 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 £558 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is £943 and £851 respectively.

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

Low season

November

High season

December

Cheapest flight

£515
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (45% 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 £654 for a return ticket.

  • 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?

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

  • Which is the best airline for flights from London to Portland, KLM or United Airlines?

    The two airlines most popular with KAYAK users for flights from London to Portland are KLM and United Airlines. With an average price for the route of £547 and an overall rating of 7.8, KLM is the most popular choice. United Airlines is also a great choice for the route, with an average price of £920 and an overall rating of 7.4.

  • 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 1349 reviews
7.2Entertainment
7.9Boarding
8.4Crew
7.7Comfort
7.3Food
Airline reviews

Transfer at CDG to connecting KLM flight to Amsterdam was a NIGHTMARE. LONG WALKWAYS, NO MOVING WALKWAYS, POOR signage, Have to take a train & No staff visible to help navigate the maze. AVOID TRANSFER AT CDG AT ALL COST.

6.0 GoodAnonymous, Dec 2024BOS - CDG
Read more KLM reviews

Transfer at CDG to connecting KLM flight to Amsterdam was a NIGHTMARE. LONG WALKWAYS, NO MOVING WALKWAYS, POOR signage, Have to take a train & No staff visible to help navigate the maze. AVOID TRANSFER AT CDG AT ALL COST.

Good food. Excellent crew service. Clean aircraft. Narrow seats and isle.

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.

The food & entertainment really stood out in terms of quality. The nasi goreng & chicken satay were absolutely delicious. It’s great that KLM feature international cuisine.

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.

The IFE was quite old, but it worked fine and the content was good. The cabin crew were excellent and the food was as also very good

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.

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.

Love the mosaic program, being able to move to an extra space seat for free is awesome

I rate it is good we had a 4-hour travel delay at one point but JetBlue gave out food vouchers and travel points credits for another flight so they try to make up for it

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.

We arrived early and finally made it to our gate almost an hour after.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

We were delayed 3x and because I didn’t purchase my tickets directly from United Airlines I was told I Have to take care of it myself so I called Underpricer and they helped me but before I changed my flights I took the risk of sticking by what my tickets were and was lucky to have gotten on the original all flight with only 15 mins before take off. not sure if I will do this again

The flight was delayed so the people from a late connecting flight was able to still make the connection.

HORRIBLE WITH THEIR WEBSITE!!! WORST WEBSITE IN THE WHOLE AIRLINE INDUSTRY

The planes are so dirty! Food crumbs and finger print smudges, Dust over the vents and carpet stains. It’s disgusting.

Everything good until we waited for jet bridge at SFO. Then pilot gets on speaker & said it won’t reach plane- too short, need to go to different gate. Then 5 min later, adjusted plane/jetbridge & all ok?!?

Gate got changed about 4 times. Very confusing and very crowded. If you don’t have wifi to help get updates, you can be in deep trouble.

Did not even get on board. Was told I needed an esta agreement. Was not aware of this when I booked the fare and not told about them

David went above and beyond to make our flight the best that it could be

Book cheap flights from London to Portland

Cheapest flights to Portland from London found in 2024 and 2025

One-way flight deals

multi-stopMultiple Airlines
3173 miLHR-PWM

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Last minute flights from Heathrow to Portland

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 Portland that are departing in the next 10 days.
22/12dim.
multi-stopAustrian Airlines
27h 59mLHR-PWM
1/1mer.
multi-stopAustrian Airlines
14h 08mPWM-LHR
£1,382
22/12dim.
multi-stopAustrian Airlines
35h 19mLHR-PWM
1/1mer.
multi-stopAustrian Airlines
18h 13mPWM-LHR
£1,402
22/12dim.
multi-stopUnited Airlines
20h 57mLHR-PWM
1/1mer.
multi-stopUnited Airlines
20h 00mPWM-LHR
£1,404
22/12dim.
multi-stopAustrian Airlines
13h 18mLHR-PWM
1/1mer.
multi-stopAustrian Airlines
14h 08mPWM-LHR
£1,416
22/12dim.
multi-stop
19h 37mLHR-PWM
1/1mer.
multi-stop
19h 38mPWM-LHR
£2,992

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Everything you need to know for your flight from Heathrow to Portland

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