PDX - LHR

£188 Find Cheap Flights from Portland to London Heathrow Airport

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 Heathrow departing on 1/2. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
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
Travellers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£460
Overall average: £528
Lufthansa
Sun 1/3Wed 11/3
PDX - LHR • 2 stops
Cheapest direct flights
£469
Typical prices: £493-£618
Finnair
Sun 1/3Wed 11/3
PDX - LHR • Direct
Our travellers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Finnair's Wi-Fi offers good speeds on long-haul flights.
British Airways' premium economy adds 18 cm legroom.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Delta
Cheapest • from £474 (return)
Icelandair
Best reviews • 7.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
5 weeks
in advance
Our data shows that travellers who book at least 5 weeks in advance save around 21% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 18% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Direct flights
4 days a week
There are direct flights from Portland to Heathrow 4 days a week: Mon, Wed, Fri, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
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 Heathrow!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Portland to Heathrow (PDX-LHR)

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

Sun, 1 Mar - Wed, 11 Mar
Lufthansa Logo
07:00 - 09:45
PDX
-
LHR
18h 45m2 stops
Lufthansa Logo
07:40 - 21:10
LHR
-
PDX
20h 30m2 stops
£460Lufthansa
Wed, 8 Apr - Wed, 15 Apr
Lufthansa Logo
15:15 - 13:20
PDX
-
LHR
14h 05m1 stop
Lufthansa Logo
11:30 - 00:54
LHR
-
PDX
21h 24m2 stops
£461Lufthansa
Mon, 2 Mar - Wed, 18 Mar
Brussels Airlines Logo
07:00 - 05:55
PDX
-
LHR
14h 55m1 stop
Brussels Airlines Logo
10:25 - 19:14
LHR
-
PDX
15h 49m1 stop
£462Brussels Airlines
Sun, 11 Jan - Fri, 23 Jan
Multiple Airlines Logo
09:50 - 11:50
PDX
-
LHR
18h 00m1 stop
Multiple Airlines Logo
14:30 - 09:15
LHR
-
PDX
26h 45m1 stop
£463Multiple Airlines
Mon, 2 Mar - Wed, 18 Mar
Multiple Airlines Logo
19:05 - 11:50
PDX
-
LHR
32h 45m1 stop
Multiple Airlines Logo
09:00 - 22:45
LHR
-
PDX
20h 45m2 stops
£464Multiple Airlines
Tue, 28 Apr - Tue, 5 May
Multiple Airlines Logo
15:15 - 13:20
PDX
-
LHR
14h 05m1 stop
Multiple Airlines Logo
08:45 - 19:05
LHR
-
PDX
18h 20m2 stops
£464Multiple Airlines
Wed, 22 Apr - Wed, 29 Apr
Lufthansa Logo
12:49 - 09:40
PDX
-
LHR
12h 51m1 stop
Lufthansa Logo
06:30 - 18:29
LHR
-
PDX
19h 59m2 stops
£465Lufthansa
Sun, 11 Jan - Wed, 21 Jan
Multiple Airlines Logo
15:15 - 11:50
PDX
-
LHR
12h 35m1 stop
Multiple Airlines Logo
15:00 - 09:15
LHR
-
PDX
26h 15m2 stops
£466Multiple Airlines
Wed, 7 Jan - Thu, 15 Jan
Lufthansa Logo
07:45 - 12:00
PDX
-
LHR
20h 15m1 stop
Lufthansa Logo
11:10 - 00:39
LHR
-
PDX
21h 29m2 stops
£467Lufthansa
Mon, 12 Jan - Mon, 19 Jan
Multiple Airlines Logo
15:15 - 11:50
PDX
-
LHR
12h 35m1 stop
Multiple Airlines Logo
19:15 - 18:30
LHR
-
PDX
31h 15m2 stops
£467Multiple Airlines
Booking Insights

KAYAK's insights & trends for Portland to Heathrow flights

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

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

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

If your flying dates are flexible, you should consider flying to London Heathrow Airport on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Portland to London Heathrow Airport. For your return ticket, we recommend flying on a Wednesday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to London Heathrow Airport, 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 Heathrow Airport is October, where tickets cost £509 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £994 and £810 respectively.

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

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 £493 on average.

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

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 Heathrow Airport, 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 Heathrow Airport, you should book around 5 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Expert advice

Expert advice for your flight from Portland to Heathrow

 
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.
Airlines
Finnair

Finnair's A350 features lower cabin altitude and higher humidity, enhancing passenger comfort.


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

British Airways

Upgrade to premium economy for 18 cm extra legroom, enhancing comfort on long flights.


BA's premium economy offers priority boarding and larger baggage allowance for long-haul comfort.

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

Good to know - Cheap tickets from Portland to London Heathrow Airport

Low seasonJanuary
Cheapest flight£188
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly and prices are also 11% lower on average.
Flight from Portland to London Heathrow Airport

When to book flights from Portland to Heathrow

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

  • What is the cheapest flight from Portland to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Portland to London Heathrow Airport was £188 for a one-way ticket and £460 for a return.

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

    Portland and London Heathrow Airport are both served by 1 main airport. You will leave Portland from Portland and will be arriving at London Heathrow.

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

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

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

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

  • Which airline alliances offer flights from Portland to London Heathrow Airport?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Portland to London are Iberia and Icelandair. With an average price for the route of £509 and an overall rating of 7.0, Iberia is the most popular choice. Icelandair is also a great choice for the route, with an average price of £449 and an overall rating of 7.0.

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

    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 Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Portland is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to London Heathrow Airport?

    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 Heathrow Airport 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 Heathrow Airport?

    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 Heathrow Airport from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Portland to London Heathrow Airport?

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

Direct departures

Portland to London Heathrow

Monday

British Airways

British Airways

Wednesday

British Airways

British Airways

Friday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Direct returns

London Heathrow to Portland

Monday

British Airways

British Airways

Wednesday

British Airways

British Airways

Friday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Reviews of the top 3 airlines flying from Portland to Heathrow

 
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 Heathrow? 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 590 reviews
7.2Boarding
6.2Food
6.9Comfort
8.0Crew
7.0Entertainment
Airline reviews

Food - Non-Existent. You pay for everything. It is strictly Pay-to-Play!

8.0 ExcellentAnonymous, Dec 2025
BOS - KEF
Read more Icelandair reviews

Food - Non-Existent. You pay for everything. It is strictly Pay-to-Play!

Never again. Terrible hospitality and human decency for an international flight. No food, no snacks, no beverages, blankets, pillows, limited entertainment. Tiny seats without any cushion and some do not even recline. I was shocked that they did not charge for seat belts. Never in my life have I witness asking for "spare change" for charity before landing on both legs of the flight. Icelandair can contribute on their own to said, so called, children's charity with the money saved from providing 3 centimeters of tea and water to hungry and dehydrated passengers.

Iceland air transfer was bad. They lost my luggage and I just received it 11/1

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

It was too cold in the plane my feet froze

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

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

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

Everything sucked. No food, one small glass of water, a tiny coffee, 5.5 hour delay with no customer service. Would never recommend flying them.

Plane delayed due to weather. Plane boarded, then told to unboard due to a maintenance issue.

the seats were so cramped you could barely move. it was difficult to eat when passengers would recline their seats. the seats were so flimsy and unstable that whenever someone got in and out of their seat, it bounced like a spring back in your face. the movies were nice. the food was terrible. even though the conditions were terrible, they tried to pressure passengers to relocate their seats to accommodate adults who were related and wanted to sit next to each other, even after the passengers expressed that they did not want to move for that purpose. on the connecting flight, the “service” consisted of items for purchase. even though the flight was only 45 minutes, once again passengers (including me) were pressured to relocate for people to sit next to each other. they couldn’t be apart for 45 minutes? this was much less compelling than being apart for an 8 hour flight.

Everything went smoothly, and we even arrived 40min earlier than scheduled, on an Orland-Madrid route.

The staff was very nice and helpful. Some of the best crew I have met.

Suddenly, I don't find my flight back on the app Help Ticket 0757345716866 Hoeflich Flight back Sunday ib5333 Ib2629 Ib4268

Was all good.l including a sofdrink. AA improved significantly. There was no entertainment.

I've taken British Airways before and it has been great. On this trip to Spain and Portugal we had two BA flights. On both flights we were taken by bus from the terminal out to the plane on the tarmac. There were many older folks on these flights, and to ask people in their 70s to lug their carry-on and personal items up the long mobile staircase to the plane entrance, is very disturbing. I won't be taking British Airways in the future. Many people on these flights were very unhappy.

The food on the flight was of marginal quality. Small bits of chicken, instant mashed potatoes and some carrots. The rolls were very dry, nearly inedible. The seats were quite small and didn’t allow for any shifting of position during the flight. There was limited leg room.0

The seats are so small that you can barely move at all. Don't try to eat with utensils in your seat either - you will elbow your neighbor in the face. Miserably small and I swear they are shrinking every time I fly. Food was meh (per usual), but at least there is free alcohol on an overseas flight. Doesn't make up for sitting in a torture chamber while hurtling through the air with hundreds of fussy people, but it's something. Entertainment options (movies, shows) are okay, nothing special, but at least there are screens, because most of the seats in these large planes do not have adjustable lighting - or air control - that you can get to, it's too high to reach - which makes reading impossible. Zero stars, AA.

Terrible customer service. I booked business class and the counter agent didn’t bother asking me about any choice or preferred seat, basically assigned me that last seat and couldn’t even answer if it was a business class seat. Also iberia lost my suitcase on my flight from JFK to MAD with the layover in BCN. Useless customer service at the counter. Thank goodness I happened to check the baggage claim area of the next flight in…there it was.

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

The flight was excellent in World Travellor plus. Well worth the extra money. Boarding at Phoenix was the usual poorly organized event. Very stressful.

Although business class, the seating was really cramped. The food was so so.

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more 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.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

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

Information on your arrival and departure airports