LHR - PWM

£417 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 15/9. 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
1 adult, Economy

KAYAK searches 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Portland.
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Cheap Flights from Heathrow to Portland (LHR-PWM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Portland

Mon, 15 Sep - Mon, 29 Sep
JetBlue Logo
08:15 - 22:07LHR-PWM
18h 52m1 stop
JetBlue Logo
14:17 - 20:45PWM-LHR
25h 28m1 stop
£417JetBlue
Find Deal
Mon, 15 Sep - Mon, 29 Sep
Icelandair Logo
08:15 - 22:07LHR-PWM
18h 52m1 stop
Icelandair Logo
07:09 - 06:30PWM-LHR
18h 21m2 stops
£459Icelandair
Find Deal
Thu, 4 Sep - Tue, 9 Sep
JetBlue Logo
08:15 - 22:02LHR-PWM
18h 47m1 stop
JetBlue Logo
14:17 - 20:45PWM-LHR
25h 28m1 stop
£461JetBlue
Find Deal
Mon, 15 Sep - Mon, 29 Sep
Virgin Atlantic Logo
12:45 - 00:11LHR-PWM
16h 26m2 stops
Virgin Atlantic Logo
06:00 - 06:20PWM-LHR
19h 20m2 stops
£508Virgin Atlantic
Find Deal
Sat, 25 Oct - Fri, 31 Oct
United Airlines Logo
08:00 - 18:38LHR-PWM
15h 38m1 stop
United Airlines Logo
06:00 - 05:55PWM-LHR
19h 55m2 stops
£545United Airlines
Find Deal
Thu, 4 Sep - Tue, 9 Sep
American Airlines Logo
14:40 - 23:45LHR-PWM
14h 05m2 stops
American Airlines Logo
14:30 - 08:05PWM-LHR
12h 35m1 stop
£571American Airlines
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Sat, 13 Sep - Sat, 20 Sep
Finnair Logo
08:55 - 17:55LHR-PWM
14h 00m2 stops
Finnair Logo
13:09 - 07:50PWM-LHR
13h 41m2 stops
£581Finnair
Find Deal
Thu, 4 Sep - Tue, 9 Sep
United Airlines Logo
07:30 - 19:29LHR-PWM
16h 59m2 stops
United Airlines Logo
15:11 - 10:40PWM-LHR
14h 29m2 stops
£591United Airlines
Find Deal
Tue, 26 Aug - Tue, 2 Sep
American Airlines Logo
10:05 - 20:36LHR-PWM
15h 31m1 stop
American Airlines Logo
12:08 - 06:50PWM-LHR
13h 42m1 stop
£593American Airlines
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Virgin Atlantic Logo
09:35 - 22:00LHR-PWM
17h 25m2 stops
Virgin Atlantic Logo
06:00 - 06:20PWM-LHR
19h 20m2 stops
£666Virgin Atlantic
Find Deal
Booking Insights

KAYAK's insights & trends for Heathrow to Portland flights

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 February, where tickets cost £512 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £951 and £852 respectively.


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

Low seasonNovember
Cheapest flight£417
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly and prices are also 18% lower 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 £627 for a one-way ticket and £552 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?

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

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

    The two airlines most popular with KAYAK users for flights from London to Portland are Finnair and United Airlines. With an average price for the route of £603 and an overall rating of 7.6, Finnair is the most popular choice. United Airlines is also a great choice for the route, with an average price of £746 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.

Reviews of the top 5 airlines flying 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 1383 reviews
7.1Entertainment
7.8Boarding
7.3Food
8.4Crew
7.7Comfort
Airline reviews

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

6.0 GoodSimon, Jul 2025STR - AMS
Read more KLM reviews

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

Crew very lovely. Arrived an hour late due to bad weather. We were given new tickets to an other flight but it could have been organised better, so we did not have to run through the whole airport to.

Flight delayed over an hour. They said they would hold our connection but then did not.

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

Any flight that lands safely is a good flight. However our leg from Helsinki was delayed 1 hour with no explanation. The delay would not allow us to make our connection to Cincinnati. I was informed by American Airlines that our Cincinnati flight was rescheduled for the following day. I immediately made a non refundable hotel reservation in Dallas. Upon exiting the plane at Dallas I was given a hotel voucher. Nice, but I can't get a refund on the hotel I booked. A little communication would have been helpful. Food on Finnair is below quality of Korean Air.

I found the staff to not be very attentive at all. When paying for Business Class you expect a certain type of service and that was not found. They were almost rude even

Not good , late, and long. We came home so late and spent so much time flying around and taxiing

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Ok. Get a different kosher caterer. The food was odd.

Food was terrible. Crew was kind but skipped over my row for providing sandwiches and beverages.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Following a paid seat upgrade for enhanced comfort, I encountered an unacceptable odor in my assigned area. It took three hours for the crew to relocate me, and the replacement seat was unacceptably close to the lavatory, offering no improvement.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

I did not fly by vergin atlantic from bangalore to vasco da gama

Your flight delayed at Heathrow n I almost missed my mother funeral.you idiots. I had to waste 10 hours in different airports. Thank your stars I'm not suing you.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Worst flight experience ever flights canceled. JetBlue told us just did not even bother standing in line to come back in one and a half hours then without any information we had to go pick up all of our luggage and spend over $2000 in accommodation just to get home. JetBlue said that the next flight available for us to get home would be three days later. Absolutely absurd hasn’t offered to give us any compensation do not fly JetBlue horrible company. They said it was based on the weather and the weather is great in all locations that we would’ve been flying to total hoax. I think it’s a conspiracy theory.

The captain gave good announcements and the flight attendants were friendly. The WiFi was pretty good. The plane itself looked very old inside and the seats were very uncomfortable. The screens in the seat backs were the smallest I’ve ever seen. There were so many loud and obnoxious kids on this flight and the parents didn’t do much to try to quiet them down. Some had videos and games on tablets with higher than necessary volume going the whole time.

Too many long delays with JetBlue. Worst major airline that serves JFK but unfortunately I keep going back because of the prices.

My JetBlue experience was nice. The flights ran on time, the aircraft was clean and comfortable, and the flight attendants were attentive. My only issue, which is isolated to the low-cost (budget) option at JetBlue, is that the check in process makes the user feel that they have to buy their seats. The seats offered for purchase are upgrades from the budget seats you get (which are essentially the last seats remaining). The interface should not make it feel like you must purchase a seat.

The plane was late to leave.. Internet was lousy. TV was not working. when we arrived, We stayed on the plane for a long time before we got to the gate. It took us a long time to retrieve our luggage because they didn’t know what carousel to send them to. It was a bad experience.

flight cancelled after 2 delays. left us sitting in JFK at 1am. no customer service to assist rebooking.

To not have food or proper snacks on a 5 hour flight was the worst.

I especially liked the lead crew officer. His boarding and safety announcements were made with a bit of novelty and humor. The flight also left the gate 10 minutes early and we landed about 20 minutes early… It was a delightful flight…

There were mutliple delays. There was inconsistent, delayed, and poor communication regarding the delays.

Spend hours delayed with no food, water anything sitting on the aieplane with no ability to eat or use the restroom. My entire experience was the absolute worst. I will never fly jet Blue again.

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