LON - PDX

$368 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 3/11. 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

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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$585
Overall average: $863
Multiple Airlines
Mon 3/9Mon 3/16
LHR - PDX • 2 stops
Cheapest non-stop
$756
Typical prices: $737-$1,002
Multiple Airlines
Mon 3/16Mon 3/30
LHR - PDX • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
BA's premium economy offers 7 inches extra legroom.
Use the Trimet Red Line for easy access from PDX.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Icelandair
Cheapest • from $663 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
LHR
-
PDX
Cheapest
LHR
-
PDX
Most popular
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 17% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Portland!
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 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

Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
6:40 am - 6:00 pm
LHR
-
PDX
18h 20m
2 stops
Multiple Airlines Logo
3:45 pm - 9:20 pm
PDX
-
LHR
22h 35m
2 stops
$585Multiple Airlines
Tue, Apr 14 - Sat, Apr 18
Icelandair Logo
9:25 pm - 6:00 pm
LHR
-
PDX
28h 35m
1 stop
Icelandair Logo
3:30 pm - 8:20 pm
PDX
-
LHR
20h 50m
1 stop
$663Icelandair
Mon, Mar 9 - Mon, Mar 16
Icelandair Logo
11:55 am - 6:00 pm
LGW
-
PDX
13h 05m
1 stop
Icelandair Logo
3:45 pm - 10:55 am
PDX
-
LGW
12h 10m
1 stop
$663Icelandair
Mon, Mar 9 - Mon, Mar 16
Icelandair Logo
12:15 pm - 6:00 pm
LHR
-
PDX
12h 45m
1 stop
Icelandair Logo
3:45 pm - 7:30 pm
PDX
-
LHR
20h 45m
1 stop
$665Icelandair
Mon, Mar 16 - Mon, Mar 30
Multiple Airlines Logo
6:20 am - 8:48 pm
LHR
-
PDX
21h 28m
2 stops
Multiple Airlines Logo
10:08 am - 3:00 pm
PDX
-
LHR
20h 52m
1 stop
$675Multiple Airlines
Mon, Mar 16 - Mon, Mar 30
Air Canada Logo
2:30 pm - 2:40 pm
LHR
-
PDX
31h 10m
1 stop
Air Canada Logo
7:05 pm - 1:20 pm
PDX
-
LHR
34h 15m
1 stop
$684Air Canada
Mon, Mar 16 - Mon, Mar 30
Air Canada Logo
2:30 pm - 2:40 pm
LHR
-
PDX
31h 10m
1 stop
Air Canada Logo
9:50 am - 10:00 am
PDX
-
LHR
16h 10m
2 stops
$687Air Canada
Mon, Mar 16 - Mon, Mar 30
Virgin Atlantic Logo
8:05 pm - 6:15 pm
LCY
-
PDX
29h 10m
2 stops
Virgin Atlantic Logo
1:55 pm - 6:30 pm
PDX
-
LCY
20h 35m
2 stops
$794Virgin Atlantic
Tue, Apr 14 - Thu, Apr 30
Virgin Atlantic Logo
7:00 pm - 11:10 am
LCY
-
PDX
24h 10m
1 stop
Virgin Atlantic Logo
1:05 pm - 8:50 am
PDX
-
LCY
11h 45m
1 stop
$802Virgin Atlantic
Tue, Mar 31 - Tue, Apr 7
Delta Logo
8:25 am - 8:59 pm
LCY
-
PDX
20h 34m
2 stops
Delta Logo
1:05 pm - 9:30 am
PDX
-
LCY
12h 25m
1 stop
$934Delta
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?

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

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 $1,074 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.

Your flight ticket price will generally be cheaper if you fly to Portland on a Saturday and more expensive on a Sunday. On your return trip to London, you should consider flying back on a Sunday, 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 September, where tickets cost $737 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $1,067 and $1,037 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 $997 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 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 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
Marisa Garcia

Marisa Garcia

Expert on Iberia

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.

Duncan Madden

Duncan Madden

Expert on British Airways and LHR

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.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

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.

Gabriel Leigh

Gabriel Leigh

Expert on PDX

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

Low seasonJanuary
Cheapest flight$368
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from London Stansted 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 $368 for a one-way ticket and $585 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?

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

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

    The Boeing 787-8 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?

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

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

    You can catch a nonstop flight from London to Portland on on Monday, Wednesday, Friday, and Sunday.

  • 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 $860 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 $679 and an overall rating of 7.1.

  • 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 $749 or less one-way and $1,258 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 11197 reviews
7.2Comfort
7.5Boarding
8.0Crew
6.9Entertainment
6.4Food
Airline reviews

The flight attendant use 1.5 hours to answer my call. My dirty food tray was unattended.

2.0 MediocreMelton, Jan 2026
LHR - DEN
Read more American Airlines reviews

The flight attendant use 1.5 hours to answer my call. My dirty food tray was unattended.

The flight was completely full. Crew was not happy. Everyone was rude and brusque. Travelling with an arm in a cast and seating in the first row of economy cabin (in front of the separation) I needed help retrieving my tray for the meal. A staff member literally threw the tray on my lap, without helping to take out the tray. Boarding was messy, with 300 people waiting in an encloses space with low ceiling. I will try to avoid AA next time I have a long flight.

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 business class seats are dated and uncomfortable. The space is bare minimum and there is absolutely no privacy. For $4K, this is not what I expect.

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.

Flight, food and crew were all good, friendly and very satisfactory.

Lost luggage after 2 days no word leaving on cruise no stuff or clothes

Staff's did their best to make everyone comfortable and I appreciate them for it

Pathetic check in experience once again. Not enough staff scheduled at bag drop or for special assistance at LHR. Really need to rethink the whole self check in procedure. The crew was good. A very decent selection of special meals in this leg as compared to the JFK-LHR leg.

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

The customer service was unbeatable from the wheelchair assist team to the flight attendants. The pilot also did an excellent job managing the turbulence.

Again, we paid $ 328.00 for specific seats are were assigned those seats.

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.

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

No meals included on this long international flight. Most airlines will offer you a meal when flying internationally. Not Icelandair. Your included choices are water and coffee. Poor customer service. The airport was also very confusing.

I flew Icelandair with my partner from Prague to the US. Overall flight time was around 12 hours, with a connecting flight in Iceland. I have flown internationally for years and with multiple airlines. Every airline serves you a meal when traveling internationally. Icelandair not only did not offer an inclusive meal, but they did not even offer a snack. The only things they served over our long flight was water and coffee. Ridiculous! Never again will I fly with Icelandair.

It was good. The air plane is clean and staff were friendly.

Worst airline I’ve ever flown. Delayed 5.5 hrs, missed connecting flight, and missed an entire day of vacation. Zero customer service

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.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Entertainment devices on A380 need to be fixed, the seats might do with updates.

Everything. Employees offered to help me because I had to use a cane.

Check-in and boarding were great. On flight staff were rude and disrespectful. Paid for extra room and found it incredibly cramped. Bathrooms kept in poor condition. Overall negative experience.

Great seat in premium economy, great food and drinks throughout lots of in flight entertainment. 1 hour 40 min delayed flying out , 2 1/2 hour wait at passport control in tampa

My seat cushion was poor. The cushion was compressed and was uncomfortable for such a long flight.

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

Information on your arrival and departure airports