PDX - LON

£263 Find Cheap Flights from Portland to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to London departing on 8/10. 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 London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to London, 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 Portland to London, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Portland to London (PDX-LON)

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

Wed, 22 Oct - Wed, 29 Oct
United Airlines Logo
05:00 - 12:20PDX-LHR
23h 20m1 stop
United Airlines Logo
18:00 - 22:10LHR-PDX
35h 10m2 stops
£401United Airlines
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Sun, 2 Nov - Wed, 19 Nov
British Airways Logo
17:45 - 11:20PDX-LHR
9h 35mdirect
British Airways Logo
13:45 - 15:55LHR-PDX
10h 10mdirect
£402British Airways
Find Deal
Sun, 16 Nov - Fri, 5 Dec
Air Canada Logo
09:50 - 11:50PDX-LHR
18h 00m1 stop
Air Canada Logo
13:25 - 09:15LHR-PDX
27h 50m2 stops
£403Air Canada
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Thu, 20 Nov - Wed, 3 Dec
Icelandair Logo
14:45 - 10:55PDX-LGW
12h 10m1 stop
Icelandair Logo
11:55 - 17:00LGW-PDX
13h 05m1 stop
£403Icelandair
Find Deal
Mon, 6 Oct - Wed, 22 Oct
United Airlines Logo
16:07 - 12:20PDX-LHR
12h 13m1 stop
United Airlines Logo
14:10 - 23:01LHR-PDX
16h 51m1 stop
£403United Airlines
Find Deal
Mon, 9 Feb - Wed, 18 Feb
KLM Logo
06:15 - 07:05PDX-LHR
16h 50m1 stop
KLM Logo
06:30 - 11:25LHR-PDX
12h 55m1 stop
£406KLM
Find Deal
Thu, 20 Nov - Sat, 6 Dec
Icelandair Logo
14:45 - 19:30PDX-LHR
20h 45m1 stop
Icelandair Logo
20:35 - 17:00LHR-PDX
28h 25m1 stop
£407Icelandair
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Air Canada Logo
15:15 - 11:50PDX-LHR
13h 35m1 stop
Air Canada Logo
14:30 - 14:45LHR-PDX
32h 15m1 stop
£419Air Canada
Find Deal
Mon, 20 Oct - Thu, 30 Oct
Virgin Atlantic Logo
13:15 - 09:30PDX-LCY
12h 15m1 stop
Virgin Atlantic Logo
17:05 - 12:25LCY-PDX
26h 20m1 stop
£439Virgin Atlantic
Find Deal
Tue, 14 Oct - Tue, 11 Nov
Virgin Atlantic Logo
15:19 - 17:20PDX-LCY
18h 01m2 stops
Virgin Atlantic Logo
17:50 - 11:25LCY-PDX
25h 35m1 stop
£442Virgin Atlantic
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts
Finnair's A350 offers Wi-Fi on most long-haul flights.
BA's premium economy provides extra legroom for comfort.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from £401 (return)
Virgin Atlantic
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
PDX-LHR
Cheapest
PDX-LHR
Most popular
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 20% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£401
Typical prices: £450-595
United Airlines
Wed 22/10Wed 29/10
PDX - LHR • 1 stop
Cheapest direct flights
£402
Typical prices: £451-594
British Airways
Tue 21/10Fri 31/10
PDX - LHR • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to London!
Expert advice

Expert advice for your flight from Portland to London

 
Snippets provided in this section are AI-generated based on a summarisation 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
Finnair

Finnair's A350 offers lower cabin altitude and higher humidity for a more comfortable journey.


Finnair's Wi-Fi is available on most long-haul flights, keeping you connected.

Read more about Finnairby Gabriel Leigh
British Airways

BA's premium economy offers 18 cm more legroom, ideal for long-haul comfort.


BA's cabin crew are known for their professionalism and proactive service.

Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

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
Duncan Madden

Duncan Madden

Expert on British Airways

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
Booking Insights

KAYAK's insights & trends for Portland to London flights

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

What is the cheapest Portland to London flight route?

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

The cheapest return flight from Portland to London costs £379 on the route between Portland (PDX) and London Heathrow Airport (LHR). It is also the most popular route.

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to London, 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 Portland to London is October, where tickets cost £479 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £893 and £788 respectively.

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

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 1 stop stopover the cheapest option at £405 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to London, 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 Portland to London, you should book around 3 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know - Cheap tickets from Portland to London

Low seasonJanuary
Cheapest flight£263
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly and prices are also 11% lower on average.
Flight from Portland to London Luton Airport

When to book flights from Portland to London

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

  • Are there any nonstop flights from Portland International Airport (PDX) to London?

    While there are no nonstop flights between these two cities, American Airlines offers one-stop services that include a layover at Chicago O'Hare International Airport. Alaska Airlines also offers service to Los Angeles International Airport, where you can then take British Airways to London Heathrow International Airport.

  • If I am driving myself to Portland International Airport for my flight to London, what are the parking options?

    There are several options to park your car at the airport. You can park in the short-term lot for about $27 a day, the long-term lot for about $24 a day, and the economy lot for about $12 a day. You can also use valet parking available at the airport for around $35 per day.

  • Are there any hotels near London Heathrow International Airport (LHR)?

    There are two great options for hotels with locations right on the airport property. The Hilton Garden Inn London Heathrow and the Aerotel London Heathrow are both perfect spots for travelers that want to stay at the airport.

  • Are there any airport lounges at Portland International Airport where I can wait for my flight to London?

    Alaska Airlines has a lounge at Portland International Airport. Amenities include food and beverage choices, Wi-Fi, newspapers and magazines, plus several televisions and comfortable seating areas. The location of the lounge is just across from Gate C5.

  • What is the cheapest flight from Portland to London?

    In the last 3 days, the lowest price for a flight from Portland to London was £357 for a one-way ticket and £545 for a return.

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

    When flying out of Portland you will be using Portland. You will be landing at one of these airports: London Gatwick, London Heathrow, London Luton, London Southend, or London Stansted.

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

    All the following airlines offer inflight Wi-Fi service on the Portland to London flight route: American Airlines, Delta, KLM, Virgin Atlantic, Air France, Iberia, and Vueling.

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

    The Boeing 787-8 Dreamliner is the aircraft model that flies most regularly on the Portland to London flight route.

  • Which airline alliances offer flights from Portland to London?

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

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

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

  • Which is the best airline for flights from Portland to London, Virgin Atlantic or Iberia?

    The two airlines most popular with KAYAK users for flights from Portland to London are Virgin Atlantic and Iberia. With an average price for the route of £715 and an overall rating of 7.4, Virgin Atlantic is the most popular choice. Iberia is also a great choice for the route, with an average price of £471 and an overall rating of 7.0.

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

    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 Portland to London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Portland 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 Portland to London?

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

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

    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 London from Portland 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 Portland to London

  • Looking for a cheap flight from Portland to London? 25% of our users found flights on this route for £375 or less one-way and £402 or less round-trip.
  • For a quick and convenient way to get to Portland International Airport (PDX) hop aboard the TriMet light rail service. The trip from Downtown Portland takes just a little less than 40min and the fare to ride is around $2.50.
  • If you have just arrived on your flight from Portland and need to do a currency exchange, Travelex offers two locations at London Heathrow Airport (LHR). One is in Terminal 2 and the other is in Terminal 5.
  • If you have some time before your flight to London Heathrow and would like something to eat, there are several options at Portland International Airport. These range from the classic burgers at Burgerville, to the pub fare of Henry's Tavern, to the healthy juices and snacks at Jamba Juice.
  • For those looking to refresh after their long flight, the Be Relax Spa at London Heathrow International Airport offers a full menu of spa treatments and services some of which can get done in as little as 15min. They have locations at gate B35 and Gate A18.
  • Bicycles are a popular method of transportation in the Portland area. Because of that, there are bike rack locations at both the north and south end of the terminal building at Portland International Airport if you would like to bike to the airport before your flight to London Heathrow.
  • London is well known for its extensive network of public transportation bus options, and the London Heathrow International Airport offers access to this amazing service. The location of the bus terminal at the airport is between Terminals 2 and 3 and is open 24h per day.

Prefer to fly direct from Portland to London?

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

Direct departures

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

Direct returns

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

Reviews of the top 3 airlines flying from Portland to London

 
See real verified KAYAK customer reviews for airlines flying from Portland to London. 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 Portland to London? 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.
7.4
Virgin AtlanticOverall score based on 664 reviews
7.3Comfort
6.9Food
7.7Boarding
8.1Crew
7.5Entertainment
Airline reviews

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

6.0 GoodShreyas, Sept 2025LHR - MCO
Read more Virgin Atlantic reviews

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

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

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

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.

It was fortunate that the flight arrived in London in accordance with schedule, and the luggage was promptly transferred to the luggage carousel. However, I find it concerning that even minor issues in economy cabins are prevalent within the industry. American Airlines, in particular, appears to have the least legroom and feels more crowded due to the proximity of neighboring passengers. Additionally, the crew’s adherence to protocol is inconsistent. While they may enforce certain rules set by the FAA on a select few individuals, they often overlook numerous violations, such as failing to reset seat recline during landing.

Easy and organized getting in and out of the flight

We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.

The crew were not very personable. The crew did not serve tea or coffee. The bathroom was not kept clean. Two out of the 5 toilets in the cabin weren't working.

It was extremely cold in the back of the plane. The seats are uncomfortable and space very small. Crew was excellent as usual.

Check in needed to be in person, not nice. Also I won’t do connections in Charlotte again because you need to go through security again and short connections become a problem

Iberia lost my bag, said they found it in another country, said they sent it to me, but never did. Went my whole trip without my stuff, but expecting it to show up because that’s what they said would happen. Their communication sucks, their website sucks, and to top it all off, their seats are small and uncomfortable. They’re bad at their jobs and they should feel bad about themselves. Do not even get me started on the flight home. AVOID!

I described my experience in the previous window. I didn't realize that there would be another opportunity for this flight. Please look at my response in the previous window.

Boarding was 2 1/2 late no explanation Captain said he did not know why, but he rested at home for an extra couple of hours. Food was edible, Nothing more.

I liked the comfort of the plane. It was unexpected from past experiences.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Didn’t fly with them as someone had cancelled my flight

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

Very caring crew on board. Didn’t have dinner as I was sleeping. Was seating in the emergency row so I had comfortable leg room

Had a nice little suite although I couldn’t close the door (but I didn’t ask anyone to help). 5K is a nice seat and very private (you look in on first class). Enjoyable flight and nice crew.

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

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