LON - PDX

$381 Find Cheap Flights from London to Portland

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 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.
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, 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
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Flights 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 round-trip 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 round-trip flight deals from London to Portland

Fri, Sep 26 - Tue, Sep 30
 Logo
10:55 am - 9:26 amLGW-PDX
30h 31m1 stop
 Logo
5:35 pm - 10:55 amPDX-LGW
33h 20m1 stop
Mon, Sep 29 - Sun, Oct 5
 Logo
9:50 am - 10:47 pmLGW-PDX
20h 57m2 stops
 Logo
7:00 am - 10:55 amPDX-LGW
19h 55m1 stop
Tue, Sep 9 - Mon, Sep 15
Icelandair Logo
1:00 pm - 5:55 pmLGW-PDX
12h 55m1 stop
Icelandair Logo
3:20 pm - 2:35 pmPDX-LGW
15h 15m1 stop
$640Icelandair
Find Deal
Mon, Sep 1 - Mon, Sep 15
Icelandair Logo
9:25 pm - 5:55 pmLHR-PDX
28h 30m1 stop
Icelandair Logo
3:20 pm - 8:20 pmPDX-LHR
21h 00m1 stop
$641Icelandair
Find Deal
Tue, Sep 9 - Mon, Sep 15
British Airways Logo
3:40 pm - 5:35 pmLHR-PDX
9h 55mnonstop
British Airways Logo
10:28 am - 7:20 amPDX-LHR
12h 52m1 stop
$709British Airways
Find Deal
Wed, Sep 17 - Sun, Sep 21
SWISS Logo
6:35 pm - 6:46 pmLGW-PDX
32h 11m2 stops
SWISS Logo
10:51 am - 5:50 pmPDX-LGW
22h 59m2 stops
$711SWISS
Find Deal
Fri, Sep 19 - Tue, Sep 23
SWISS Logo
6:00 am - 6:46 pmLHR-PDX
20h 46m2 stops
SWISS Logo
8:30 am - 7:55 amPDX-LHR
39h 25m2 stops
$715SWISS
Find Deal
Tue, Sep 2 - Tue, Sep 16
British Airways Logo
3:40 pm - 5:35 pmLHR-PDX
9h 55mnonstop
British Airways Logo
11:18 am - 9:05 amPDX-LHR
13h 47m1 stop
$730British Airways
Find Deal
Mon, Aug 25 - Tue, Sep 9
American Airlines Logo
3:40 pm - 5:35 pmLHR-PDX
9h 55mnonstop
American Airlines Logo
7:25 pm - 1:00 pmPDX-LHR
9h 35mnonstop
$741American Airlines
Find Deal
Tue, Sep 9 - Mon, Sep 15
American Airlines Logo
3:40 pm - 5:35 pmLHR-PDX
9h 55mnonstop
American Airlines Logo
10:28 am - 10:30 amPDX-LHR
16h 02m1 stop
$747American Airlines
Find Deal
Expert advice

Expert advice for your flight from London to Portland

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Iberia

Iberia's business class offers all-aisle access and Wi-Fi for connectivity.


Iberia's premium economy offers 37” seat pitch and 18.5” width for comfort.

Read more about Iberiaby Marisa Garcia
British Airways

BA's premium economy offers 7 inches extra legroom, ideal for long flights.


BA's cabin crew are professional and proactive, enhancing the flight experience.

American Airlines

AA's Main Cabin Extra offers early boarding and complimentary drinks.


AA's Premium Economy includes upgraded seats and complimentary meals.

Airports
LHR

For a smooth departure from Heathrow, arrive two hours early and monitor flight screens closely for gate announcements.

Read more about LHRby Duncan Madden
PDX

Upon arrival at PDX, use the Trimet Red Line for a quick and budget-friendly ride into Portland.

Read more about PDXby Gabriel Leigh
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways and LHR

Duncan Madden

Duncan Madden

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.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on PDX

Gabriel Leigh

Gabriel Leigh

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.

Read more
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 round-trip flight from London to Portland?

What is the cheapest London to Portland flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from London to Portland.

Our data shows that the cheapest route for a return flight from London to Portland cost $785 and was between London Heathrow Airport (LHR) and Portland (PDX). On average, the best prices are found if you fly this route. The average price for a return flight for this route is $785.

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.

Your flight ticket price will generally be cheaper if you fly to Portland on a Monday and more expensive on a Sunday. On your return trip to London, you should consider flying back on a Tuesday, and avoid Saturdays for better deals.

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 $766 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $1,158 and $1,120 respectively.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $749 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 2 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$381
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 12% 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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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

  • What is the cheapest flight from London to Portland?

    In the last 3 days, the lowest price for a flight from London to Portland was $381 for a one-way ticket and $613 for a round-trip.

  • Do I need a passport to fly between London and Portland?

    A passport is required to fly from London to Portland.

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

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

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

    Only Delta offers 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?

    oneworld is the only airline alliance operating flights between London and Portland.

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

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

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

    The two airlines most popular with KAYAK users for flights from London to Portland are American Airlines and Icelandair. With an average price for the route of $936 and an overall rating of 7.2, American Airlines is the most popular choice. Icelandair is also a great choice for the route, with an average price of $806 and an overall rating of 7.0.

  • 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 round-trip 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? 25% of our users found flights on this route for $1,077 or less one-way and $910 or less round-trip.

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 3 airlines serving 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.
7.2
American AirlinesOverall score based on 10000 reviews
6.5Food
6.9Entertainment
7.5Boarding
8.0Crew
7.2Comfort
Airline reviews

Very poor delay in dfw was really bad n long

2.0 Mediocredavix, Jul 2025DFW - MKE
Read more American Airlines reviews

Very poor delay in dfw was really bad n long

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

Very clean and comfortable cabin. Amazing Mediterranean salad for lunch before landing. Great range of films to watch. Really quiet and easy to sleep on the flight also. The initial food was a bit weird: odd fried chicken pieces in some weird white gloop, but that would be my lack of cultural knowledge on the grub. Salad more than made up for it at the other end. Staff were super attentive and helpful. Great and easy flight

I flew Business Class. Rory, one of the Cabin stewards, was attentive, explained the menu, provided appropriate drinks. was

The flight crew were friendly and attentive. Food was good and they passed out ice cream and drinks awhile after Lunch was done. The ice cream was a nice treat! I found several movies to watch during the flight. There was many movies and tv shows to choose from. We flew Premium economy and there was enough leg room to be comfortable. The seats were also comfortable. I would fly AA again if the airfare isn’t expensive.

Gate check bags that had to be gate checked because of first flight being a small flight are missing. British airways lost the luggage and haven’t met up with them yet!

Staff lovely , economy seats very uncomfortable , wheelchair assistance wonderful in Heathrow awful in Nashville !

Good crew and a great experience. Only good things to say.

Great thanks - a whole row to myself. Good food but film selection not great.

Packed commercial flight was as comfortable as can be expected

Boarded with no problems. Sat on the tarmac for an hour before taking off. We were the last ones on our connecting flight. Didn't think we were going to make it. Our flight to Iceland was similarly delayed. When we've flown other airlines, pilots have tried to make up time while in the air. This doesn't seem to be something that Icelandair does. We made all of our flights, but it was stressful and we didn't think it was going to happen based on the time we arrived.

The flight was delayed and as a consequence we missed our connecting flight. Were stuck for another 6h in Reykyavik. Appreciated that we got a generous food voucher at least. Would have liked to see more information upon arrival including a person waiting for connecting flight travellers and informing already that we will not catch the flight and directing us to the office dealing with the matter; unfortunately that didnt happen and we hence first needed to find out whether flight had indeed left already and then locate the adequate office to help us with booking us on the next connecting flight. Also my suitcase broke and it is not clear whether it is happened on the leg with Iceland Air from DC to Reykyavik or on the leg with Lufthansa from Reykyavik to Frankfurt. Finally, understood that it is a low cost company but at least provision of earplugs for free would have been nice, instead of making them buy.

Good service. No complementary food for international flight. WiFi kinda pricey. Got the job done for the right price.

The plane was very small and the aisle was so narrow that every time someone walked by they rubbed against me, so it was very uncomfortable.

Everything was good. Only issue comes from being vegan and flying. The food options are super limited.

Overall good for an economy fare. IMO the movie selection could be improved. Great that you can now connect bluetooth headphones to the entertainment system.

For a four hour flight, I was disappointed that everything was for purchase except for coffee, tea, or water. The disembarking in Iceland was so inefficient and time-consuming. We landed and stopped in the middle of the tarmac, had to disembark in the rain, and then squeeze into a bus which took us to the airport. Crazy! How does that work in winter?

Paid for a Premium seat...minimal recline, no footrest. Maybe slightly wider than a cheap economy seat. Zero chance of getting any rest on this plane

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

Everything about the flight check-in was smooth no line the plane is clean and bathroom

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

I was put into business class. Wow! My flight attendant was great! The food amazing’

The gate at London Gatwick had confusing signs for the different zones and the staff seemed harried because people didn't know when it was their turn to come to the desk. Plus, with there were too many carry-on bag travelers, myself included. The charge scheme for checking bags is frustrating. If you travel light, you want the freedom to leave as soon as you deplane. When you are forced to gate-check your bag simply because the flight is fully booked, you lose whatever time you'd hoped to save because you're still stuck waiting for your bag to come off the conveyor belt.

Not so good with their baggage handling as they damaged one of my check in luggage

All went well on the flight, not happy of course with having to pay for a seat and in hold luggage of £50

We never made it onto this flight due to BA's lackluster organisation.

The air hostess were good, cheerful, but I didn't like the boarding. My son and I initially bought our flight tickets, making sure it included 1 luggage and a carry on. Tickets were purchased for British airlines, but we were merged with American Airlines. At checking in our languages, we were told, we don't have luggage prepaid so we had to pay extra $125 each and almost £60 on our way back. I think that's unfair.

Economy seats are so small and compacted so close together that comfort is negatively affected, especially on long flights. However that is due to aircraft design, not anything the airline can do about it.

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

Information on your arrival and departure airports

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