€337 Cheap Flights Portland to London (PDX-LHR)

View €337 flight on Mon, 17 Nov 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Heathrow Airport (LHR)

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Cheap flights from Portland to London (PDX-LHR)

Prices were available within the past 7 days and start at €337 for one-way flights and €478 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Mon, 3 Nov - Wed, 19 Nov
PDX
Portland
LHR
London
€478 Return, found 1 hour ago
€478
Return
found 1 hour ago
Select Icelandair flight, departing Mon, 3 Nov from Portland to London, returning Wed, 19 Nov, priced at €478 found 1 hour ago
Delta
Mon, 3 Nov - Wed, 19 Nov
PDX
Portland
LHR
London
€528 Return, found 1 hour ago
€528
Return
found 1 hour ago
Select Delta flight, departing Mon, 3 Nov from Portland to London, returning Wed, 19 Nov, priced at €528 found 1 hour ago
United
Mon, 3 Nov - Wed, 19 Nov
PDX
Portland
LHR
London
€548 Return, found 1 hour ago
€548
Return
found 1 hour ago
Select United flight, departing Mon, 3 Nov from Portland to London, returning Wed, 19 Nov, priced at €548 found 1 hour ago
Air Canada
Mon, 3 Nov - Wed, 19 Nov
PDX
Portland
LHR
London
€548 Return, found 1 hour ago
€548
Return
found 1 hour ago
Select Air Canada flight, departing Mon, 3 Nov from Portland to London, returning Wed, 19 Nov, priced at €548 found 1 hour ago
Delta
Mon, 3 Nov - Wed, 19 Nov
PDX
Portland
LHR
London
€550 Return, found 1 hour ago
€550
Return
found 1 hour ago
Select Delta flight, departing Mon, 3 Nov from Portland to London, returning Wed, 19 Nov, priced at €550 found 1 hour ago
American Airlines
Mon, 3 Nov - Wed, 19 Nov
PDX
Portland
LHR
London
€552 Return, found 1 hour ago
€552
Return
found 1 hour ago
Select American Airlines flight, departing Mon, 3 Nov from Portland to London, returning Wed, 19 Nov, priced at €552 found 1 hour ago
British Airways
Mon, 3 Nov - Wed, 19 Nov
PDX
Portland
LHR
London
€552 Return, found 1 hour ago
€552
Return
found 1 hour ago
Select British Airways flight, departing Mon, 3 Nov from Portland to London, returning Wed, 19 Nov, priced at €552 found 1 hour ago
Virgin Atlantic
Mon, 3 Nov - Wed, 19 Nov
PDX
Portland
LHR
London
€557 Return, found 1 hour ago
€557
Return
found 1 hour ago
Select Virgin Atlantic flight, departing Mon, 3 Nov from Portland to London, returning Wed, 19 Nov, priced at €557 found 1 hour ago
Iberia
Mon, 3 Nov - Wed, 19 Nov
PDX
Portland
LHR
London
€557 Return, found 1 hour ago
€557
Return
found 1 hour ago
Select Iberia flight, departing Mon, 3 Nov from Portland to London, returning Wed, 19 Nov, priced at €557 found 1 hour ago
KLM
Mon, 3 Nov - Wed, 19 Nov
PDX
Portland
LHR
London
€558 Return, found 1 hour ago
€558
Return
found 1 hour ago
Select KLM flight, departing Mon, 3 Nov from Portland to London, returning Wed, 19 Nov, priced at €558 found 1 hour ago

Find the cheapest month to fly from Portland (PDX) to London (LHR)

April is typically the cheapest month to fly

From €425 - €1,168 per traveller.

Frequently asked questions

How much is a flight from Portland Intl. Airport (PDX) to Heathrow Airport (LHR)?
If you're travelling between PDX Airport and London Heathrow, round-trip flights start from €478. This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't wait around. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Portland Airport to Heathrow Airport (LHR)?
Most flights can be conveniently cancelled online, but whether or not you incur a fee differs between airlines. If you do have to cancel your holiday, follow the instructions in the Customer Service Portal.
How do I find cheap flights from PDX Airport to Heathrow Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for PDX to LHR flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Portland Intl. Airport (PDX) to London Heathrow?
You'll have 7,900 kilometres to cover on the long-haul Portland to Hounslow route. Dress in comfy clothes and consider taking a pair of noise-cancelling headphones.
Which airlines fly direct from Portland Intl. Airport (PDX) to Heathrow Airport?
If you're eager to fly straight from Portland Airport to Heathrow Airport, British Airways (BA) is a top option. It operates 17 flights every month between Portland and Hounslow.
Are PDX to LHR flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can sometimes nab a bargain, with some super cheap fares from Portland Airport to LHR showing up a few weeks prior to the departure date. If you'd rather plan ahead of time, Expedia compares and updates all the best flight deals continually — as early as a year in advance in some cases. It depends on the carrier though, as not every airline advertises prices that far in advance.

Travel information

Travel information

Origin airport
Portland Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, United, Virgin Atlantic
Return price
€478
Distance
7839 km
Average flight time
9 hours 35 mins

Book with confidence

Book with confidence

Perfect flights from Portland to London

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Portland to London. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Portland Intl. to Heathrow ticket options cater to your travel preferences, with incredible one-way fares from €337 and roundtrip prices from €478. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Heathrow and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in London.
Perfect flights from Portland to London

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Explore a world of travel with Expedia

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