PDX - LON

£192 Find Cheap Flights from Portland to London – 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 Portland to London departing on 5/9. 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

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest return fare
£657
Typical prices: £511-£928
Lufthansa, SWISS
Mon 30/11Mon 7/12
PDX - LHR • 1 stop
Cheapest direct flights
£661
Typical prices: £512-£744
British Airways
Wed 4/11Wed 11/11
PDX - LHR • Direct
Top airlines
Cheapest • from £657 (return)
Best reviews • 7.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with British Airways. Average duration is 9h 30m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £398 (return)
Shortest trip • 11h 55m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
Booking Insights
Expert advice
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

Mon, 30 Nov - Mon, 7 Dec
Multiple Airlines Logo
10:00 - 11:50
PDX
-
LHR
17h 50m
1 stop
Multiple Airlines Logo
20:05 - 20:33
LHR
-
PDX
32h 28m
2 stops
£657Multiple Airlines
Wed, 4 Nov - Wed, 11 Nov
Multiple Airlines Logo
10:00 - 11:50
PDX
-
LHR
17h 50m
1 stop
Multiple Airlines Logo
13:45 - 21:02
LHR
-
PDX
39h 17m
2 stops
£657Multiple Airlines
Wed, 4 Nov - Wed, 11 Nov
Delta Logo
13:10 - 10:00
PDX
-
LHR
12h 50m
1 stop
Delta Logo
06:30 - 11:20
LHR
-
PDX
12h 50m
1 stop
£657Delta
Sun, 17 Jan - Wed, 20 Jan
Iberia Logo
17:45 - 11:20
PDX
-
LHR
9h 35mdirect
Iberia Logo
07:35 - 22:09
LHR
-
PDX
22h 34m
2 stops
£659Iberia
Wed, 4 Nov - Wed, 11 Nov
Lufthansa Logo
10:00 - 11:20
PDX
-
LHR
17h 20m
2 stops
Lufthansa Logo
06:30 - 21:02
LHR
-
PDX
22h 32m
2 stops
£660Lufthansa
Wed, 4 Nov - Wed, 11 Nov
British Airways Logo
17:45 - 11:20
PDX
-
LHR
9h 35mdirect
British Airways Logo
13:35 - 15:50
LHR
-
PDX
10h 15mdirect
£661British Airways
Wed, 19 Aug - Thu, 27 Aug
Icelandair Logo
19:00 - 11:55
PDX
-
LHR
32h 55m
1 stop
Icelandair Logo
21:25 - 17:50
LHR
-
PDX
28h 25m
1 stop
£661Icelandair
Wed, 4 Nov - Wed, 11 Nov
Multiple Airlines Logo
07:00 - 09:20
PDX
-
LHR
18h 20m
2 stops
Multiple Airlines Logo
20:05 - 21:02
LHR
-
PDX
32h 57m
2 stops
£661Multiple Airlines
Mon, 30 Nov - Mon, 7 Dec
Multiple Airlines Logo
07:00 - 09:20
PDX
-
LHR
18h 20m
2 stops
Multiple Airlines Logo
20:05 - 20:33
LHR
-
PDX
32h 28m
2 stops
£661Multiple Airlines
Wed, 28 Oct - Wed, 4 Nov
British Airways Logo
18:45 - 11:20
PDX
-
LHR
9h 35mdirect
British Airways Logo
13:35 - 15:50
LHR
-
PDX
10h 15mdirect
£662British Airways
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.

How much is a return flight from Portland to London?

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

Flight prices are typical for this route right now.

Flights to London from Portland usually cost between £518 and £868 in January.
The lowest price found in the past 5 days was £659 on Iberia (17 Jan–20 Jan).

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 £786 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 Sunday and more expensive on a Wednesday. 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 February, where tickets cost £524 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is £952 and £871 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 2 stops stopover the cheapest option at £600 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Expert advice

Expert advice for your flight from Portland to London

 
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
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.

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.

Good to know - Cheap tickets from Portland to London

Low season

February

Cheapest flight

£192
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly (25% more expensive 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 5 days, the lowest price for a flight from Portland to London was £192 for a one-way ticket and £657 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?

    American Airlines, Iberia, and KLM offer inflight Wi-Fi service on the Portland to London flight route.

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

    The Boeing 787-10 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, Icelandair or British Airways?

    The two airlines most popular with KAYAK users for flights from Portland to London are Icelandair and British Airways. With an average price for the route of £580 and an overall rating of 7.0, Icelandair is the most popular choice. British Airways is also a great choice for the route, with an average price of £784 and an overall rating of 6.7.

  • 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 London to Portland? 25% of our users found flights on this route for £789 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 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.
7.0
IcelandairOverall score based on 716 reviews
8.0Crew
6.1Food
6.9Comfort
7.2Boarding
6.9Entertainment
Airline reviews

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

2.0 MediocreAnonymous, Jul 2026
RDU - KEF
Read more Icelandair reviews

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

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.

Damage May baggage and I report the airport agant and they see it

Crew was very friendly. Need lay flat beds! More snacks

Good. Rxception is the Entertainment - movies and TV shows all out of date…

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

They cancelled our connecting flight resulting in another layover reaching our final destination 8 hours later than scheduled.

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

Screen didn't work, and neither did the button to tilt the seat even though the seat was comfortable

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Good crew and boarding process. Horrible food and one of the most uncomfortable aircraft seats I have ever sat in. The cabin temperature was warm which made it hard for my family to sleep.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

Flight delayed and we were forced to check our carryon bags which was huge inconvenience.

First leg delay, rescheduled second leg without our approval, cancelled rescheduled second leg, rescheduled cancelled leg to three days later...

We were seated in the rear of the plane. Buses arrived to take us to the terminal but there weren’t enough so we waited an hour to leave the plane.

Every flight was late in arrival, last was late in departure and late in arrival, then lost our luggage!

They canceled the flight and would not rebook us within several days

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

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

Information on your arrival and departure airports