LON - PDX

£293 Find Cheap Flights from London to Portland – Compare and Save

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 Portland departing on 3/9. 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, 0 bags

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Everything you should know

Cheapest return fare
£656
Typical prices: £644-£860
United Airlines
Mon 31/8Thu 10/9
LHR - PDX • 2 stops
Cheapest direct flights
£694
Typical prices: £620-£817
British Airways
Wed 7/10Wed 21/10
LHR - PDX • Direct
Top airlines
Cheapest • from £656 (return)
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with British Airways. Average duration is 10h 00m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
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Top routes
Cheapest
Most popular
Insights
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Avoid delays
Most punctual • 78% on-time
Best time • Fewest delays
Insights
Insights
Insights
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Top stopover airports
Cheapest • Avg £499 (return)
Shortest trip • 12h 36m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
+1
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Good to know
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Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from London to Portland (LON-PDX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London 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 London to Portland

Mon, 31 Aug - Thu, 10 Sep
United Airlines Logo
17:55 - 20:10
LHR
-
PDX
34h 15m
2 stops
United Airlines Logo
05:30 - 11:50
PDX
-
LHR
22h 20m
2 stops
£656United Airlines
Tue, 18 Aug - Tue, 25 Aug
Multiple Airlines Logo
08:50 - 09:31
LGW
-
PDX
32h 41m
3 stops
Multiple Airlines Logo
15:30 - 16:20
PDX
-
LGW
16h 50m
2 stops
£660Multiple Airlines
Wed, 19 Aug - Mon, 31 Aug
Condor Logo
15:35 - 13:35
LGW
-
PDX
30h 00m
1 stop
Condor Logo
15:30 - 18:50
PDX
-
LGW
19h 20m
1 stop
£662Condor
Mon, 31 Aug - Thu, 10 Sep
Icelandair Logo
21:25 - 11:50
LHR
-
PDX
22h 25m
1 stop
Icelandair Logo
15:30 - 20:20
PDX
-
LHR
20h 50m
1 stop
£664Icelandair
Wed, 28 Oct - Sat, 14 Nov
Icelandair Logo
12:15 - 18:00
LHR
-
PDX
12h 45m
1 stop
Icelandair Logo
14:45 - 10:50
PDX
-
LHR
12h 05m
1 stop
£665Icelandair
Sat, 21 Nov - Thu, 3 Dec
Air Canada Logo
13:00 - 14:37
LHR
-
PDX
33h 37m
2 stops
Air Canada Logo
07:00 - 11:50
PDX
-
LHR
20h 50m
1 stop
£667Air Canada
Fri, 4 Sep - Wed, 23 Sep
Virgin Atlantic Logo
11:45 - 11:10
LHR
-
PDX
31h 25m
1 stop
Virgin Atlantic Logo
17:50 - 15:35
PDX
-
LHR
13h 45m
1 stop
£672Virgin Atlantic
Thu, 10 Dec - Mon, 14 Dec
United Airlines Logo
07:40 - 00:54
LHR
-
PDX
25h 14m
2 stops
United Airlines Logo
10:00 - 11:50
PDX
-
LHR
17h 50m
1 stop
£693United Airlines
Tue, 1 Sep - Mon, 7 Sep
Air Canada Logo
09:30 - 19:11
LHR
-
PDX
17h 41m
2 stops
Air Canada Logo
15:30 - 21:00
PDX
-
LHR
21h 30m
2 stops
£695Air Canada
Mon, 7 Sep - Mon, 21 Sep
Virgin Atlantic Logo
20:55 - 11:10
LHR
-
PDX
22h 15m
1 stop
Virgin Atlantic Logo
13:05 - 09:00
PDX
-
LHR
11h 55m
1 stop
£696Virgin Atlantic
Booking Insights

KAYAK’s insights & trends for London to Portland flights

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

How much is a return flight from London to Portland?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London to Portland departing in August.

Flight prices are typical for this route right now.

Flights to Portland from London usually cost between £624 and £1,057 in August.
The lowest price found in the past 5 days was £656 on United Airlines (31 Aug–10 Sept).

What is the cheapest London to Portland flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from London to Portland costs £662 on the route between London Heathrow Airport (LHR) and Portland (PDX). It is also the most popular route.

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

The average price of all round-trip flights from London to Portland clicked on KAYAK for each day over the last 12 months.

For London to Portland, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Portland back to London, the best deals are generally found on Sunday, with Wednesday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London 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 to Portland is February, where tickets cost £592 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is £964 and £864 respectively.

Can I save money by flying with a stopover from London to Portland?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £765 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Portland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London to Portland, you should book around 3 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Expert advice

Expert advice for your flight from London to Portland

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Good to know - Cheap tickets from London to Portland

Low season

January

Cheapest flight

£293
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly and prices are also 13% lower on average.
Flight from London Gatwick Airport to Portland

When to book flights from London to Portland

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

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

    The Trimet Max/Light Rail operates MAX Red Line service with departures every 15min to the downtown area from Portland International Airport. Airport car hire and taxi and rideshare services like Uber, Lyft and Wingz are additional options. Some major hotels also provide an airport shuttle service, so if your accommodation is in the centre, check if it's included.

  • Are there currency exchange locations at Portland International Airport?

    Currency Exchange International (CXI) operates from two locations at Portland International Airport. There’s one at Baggage Reclaim (landside), which is open Monday-Saturday from 10:00-16:00 local time and another at Concourse D (airside), with open hours from 07:30-15:30 daily. You can also find a few cash machines at International Arrivals.

  • What other cities are accessible from Portland International Airport?

    The city of Portland, Oregon, is well situated to explore the Pacific Northwest (Seattle, Boise) and the Bay Area (Sacramento, San Francisco, Oakland) by rail, car and bus. You can also take advantage of cross-border travel to Canada by visiting nearby Vancouver, British Columbia or Calgary, Alberta.

  • Are there any unique attractions at Portland International Airport?

    Portland International Airport offers a few cultural attractions to inspire and enhance your airport experience. Their art program has a rotating installation of nine exhibits featuring regional artists, while their music program showcases classical, jazz and contemporary music played by volunteer musicians. In addition, Hollywood Theatre at Concourse C previews film shorts focused on the Pacific Northwest region.

  • What is the cheapest flight from London to Portland?

    In the last 5 days, the lowest price for a flight from London to Portland was £293 for a one-way ticket and £656 for a return.

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

    There are 4 airports in London (London City, London Gatwick, London Heathrow, and London Luton.) and only 1 airport in Portland (Portland). The cheapest flights are generally found on the London Gatwick Airport to Portland flight route.

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

    Virgin Atlantic, and Air France offer inflight Wi-Fi service on the London to Portland flight route.

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

    The Boeing 787-10 Dreamliner is the aircraft model that flies most regularly on the London to Portland flight route.

  • Which airline alliances offer flights from London to Portland?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from London to Portland are Alaska Airlines and Finnair. With an average price for the route of £906 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Finnair is also a great choice for the route, with an average price of £747 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from London 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 to Portland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland 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 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

  • Looking for a cheap flight from London to Portland? 25% of our users found flights on this route for £656 or less one-way and £788 or less round-trip.
  • Portland International Airport (PDX) in the U.S. state of Oregon is a joint civilian-military installation and the largest international airport in the city. It's about 12 miles from the city centre and uses one terminal for all flights.
  • Flights from London to Portland leave from two airports. Several airlines offer direct services on this route from London Heathrow Airport (LHR). These include Finnair, British Airways and American Airlines. You can also get a few flights with stops from London City Airport (LCY) via Delta Airlines, with at least two connections in Amsterdam and Seattle.
  • If you decide to park and fly, there are multiple options available at London City and London Heathrow airports to suit your travel needs. For example, you'll find Short Stay, Long Stay and Business parking at London Heathrow and special weekender rates at London City. These car parks allow you to book in advance or in person. In addition, all parking garages at both airports can accommodate Blue Badge holders.
  • After a long drive to the airport, it's ideal to relax and unwind before your flight. At London Heathrow, you have a choice of lounges at each of its five terminals, including multiple locations of Plaza Premium (T2/T4) and Club Aspire (T3/T5). In addition, there’s a First Class Lounge at London City Airport located in the Private Jet Centre Facility.
  • Both airports offer a range of services and facilities catering to persons with limited mobility, from dedicated parking spaces to mobility equipment and personal escorts who see you safely through airport security right up to your seat on the flight. If you require special assistance, it’s always best to book in advance.

Prefer to fly direct from London to Portland?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London to Portland.
Find which airlines fly direct from London to Portland Airport, which days they fly and book direct flights.

Direct departures

London to Portland

Monday

British Airways

British Airways

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Thursday

British Airways

British Airways

Friday

British Airways

British Airways

Saturday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Direct returns

Portland to London

Monday

British Airways

British Airways

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Thursday

British Airways

British Airways

Friday

British Airways

British Airways

Saturday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Reviews of the top 5 airlines flying from London 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 London 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.
7.5
Virgin AtlanticOverall score based on 694 reviews
7.5Entertainment
7.3Comfort
6.9Food
8.1Crew
7.7Boarding
Airline reviews

Lounge was top notch h with great variety of food and drinks. Cabin crew were great. Smooth flight.

10.0 ExcellentLye Sim, Jun 2026
LHR - JFK
Read more Virgin Atlantic reviews

Lounge was top notch h with great variety of food and drinks. Cabin crew were great. Smooth flight.

My seat 3G did not go down fully and the buttons were not working properly

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Security area in terminal 3 needs to be made much nicer. Less claustrophobic and use of glass and big ceilings wouldhelp

accomodating check in staff, friendly flight crew ( a crew member was speaking tactlessly and was overfamiliar with passengers

Seats need to be updated. Allowance needs to be made for dinner service at an alternative time

If I could fly Virgin Atlantic airlines to every place, I need to go, I would. Leaving Heathrow through the special virgin air entrance, security is completely white glove service. I love this airline. From ticketing agents to flight staff everyone tries to make it a wonderful & happy flight experience. I wish other airlines copied the positive culture of Virgin Airlines.

Premium was very comfortable. Food was delicious. I had specific diet requirement and Virgin Atlantic ensured it was provided. Onboard crew was very friendly and caring. Extremely smooth journey. I wonder how upper class experience would be. Perhaps one day, I will try upper class.

On arrival to JFK it to 3.5hrs to clear immigration, as only 3 booths open. Almost missed connection

Everything went as planned. The only issue I had was with the gate C31 attendant. The person could barely speak English and was very difficult to understand.

American Airlines II: Delay Boogaloo. Multiple gate changes, delays, boarded and then MORE delays. I hate to say this won’t matter, but posting stuff about major corporations in 2026 is a post-modern “scream into the void.” Was multiple hours late coming home, so there you go.

It's very confusing because Kayak has it as American Airlines, but it was Hawaiian Airlines, but operated by Alaska Airlines. I had to go to the airport for my boarding pass because American said I didn't have any trips.

Seats were much more cramped then on the 737. Narrower and rows closer together. Flight was absolutely packed and the plugs under the seats didn't work. Was forced to check my bag even though previous flight had no issue with it.

The plane was late, when we did board the plane was as cold as a freezer. I was freezing the entire flight, no blankets. Lost miserable flight I’ve ever had.

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

Packed commercial flight was as comfortable as can be expected

We were re routed due to a flight cancellation. We did not fly out of Miami. We originally booked first class and were moved to coach without being compensated.

2 gate changes, several announced delays, not enough room and seats at the gate. Many had to stand while waiting. The actual flight was fine.

Heathrow is a nightmare in general (crowded, etc). BA was great - having to take a bus between the gate and the plane is a bummer.

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

Terrible way of boarding in Reykjavik. Seats comfortable. Meal was good.

1. No food on a 8 hr flight is a travesty! The fare was not that low. 2. The entertainment was pretty bad and you had to buy headphones!!! 3. Only 2 toilets for the whole Economy section!!

Having been prepared for paying for everything on board other than water, coffee and tea the service was OK. Food and drink is expensive but the food was OK if limited in scope. Plane was clean and obviously well serviced. After complaining about having to walk in wind and rain to a get a bus to the airport the same thing happened at Portland. I’m sure you could get a terminal gate flight, complimentary food and drink for not much more money without traipsing through rain and slush in Reykjavik. Not bad but not great.

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

Smooth efficient airline. Think they should have their own bag drop as the queue took 30mins to bmscan and drop

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.

did internet check in but still had to get checked in at the counter and this was not the first time. Bummer!

Paying $75 for my bag is disgusting. Got off ground late so I missed my connections. Kept us waiting for passengers in the cold. Will not use them again.

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

The flight was delayed by an hour. Made the connection uncomfortably tight.

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

Other than problems with checking in and uploading passport info everything was great. It would be nice to be able to manually input passport info. Often while traveling the bandwidth has problems uploading pictures

Boarding was a zoo. London ground crew was useless. Poor communication regarding where to line up. We were group 2, and everyone was jammed in together. Ground crew didn’t seem to care.

Horrible flight attendant in back of economy that screamed at me, have already reported to United. Horrible food - for Gluten free, why would you assume the person is vegetarian? I was served some kind of horrible curry bean paste and multiple cold rolls and soggy vegetables with no seasoning... um no!

Knowing that there was weather in other areas of the world, united airlines should have planned better than it did. The flight was 5 hours late. United has no regard for its customers

Flight itself fine, big problem with KAYAK. Revised e-ticket sent in July stated departure LHR 10:55, arrival SFO 13:45. (a believable local arrival time given flight length and time difference). When we got to LHR there was no 10:55 flight to SFO and were advised that in fact flight LH2473 was arriving in MUNICH at 13:45pm, and that we would need to get a connecting flight arriving in SFO at 18:55 local time - over 5 hours later than expected. 1) you the booking agent made an error on the revised e-ticket you sent, omitting the Munich stopover and incorrect SFO arrival time. 2) I booked a DIRECT flight and 3) we had to cancel plans this end as a result, even though the team at LHR did a great job moving us to a later direct flight getting us in 2 hours earlier than the flight from munich would have.

Wonderful. It seemed so quick and the view of Mt Hood was really good.

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

We were in business class and I had seat # 1. This was a night flight and after dinner was served, lights were dimmed and I went to sleep. The crew were loud and noisy so I didn’t get much sleep. I expect the crew to enjoy themselves but would Appreciate some decency in staying quiet while the passengers sleep

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

We had a pretty good experience. Enjoyed both the flights. Crew was very good and helpful.

We were kicked off this flight by British Airways due to delays on our connecting flight also operated by British airways and were rebooked on a different carrier which delayed our arrival home by > 26 hours.

Boarding is a mess. They never check group # so lots of people crowding in. Comfortable seats this flight. I had an empty seat next to me, very convenient. Food was really not good, but I was starved. The pizza snack thing was horrible. Crew was grand. They really make it enjoyable.

Not being able to check my luggage ruined my flight experience with British Airways. I have to spend hundreds of dollars to get my luggage to me.

There was a group of people on the flight that were drunkenly speaking loud, didn't allow anyone to sleep, and were not adequately stopped.

At the airport checkin they didn’t have all the details I’d given during the very time consuming online checkin (very slow site), and they lost my bag….

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

Other airlines flying from London to Portland

Flights from the other most popular airlines that fly from London to Portland according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.