Cheap Flights from Portland (PDX) to London (LHR)

View AU$545 flight on Thu, 2 Oct. 2025Opens in a new window

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

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Cheap Flights from Portland (PDX) to London (LHR)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Thu., 2 Oct. - Thu., 9 Oct.
PDX
Portland
LHR
London
AU$967 Return, found 6 days ago
AU$967
Return
found 6 days ago
Select Icelandair flight, departing Thu., 2 Oct. from Portland to London, returning Thu., 9 Oct., priced at AU$967 found 6 days ago
Delta
Mon., 28 Apr. - Wed., 14 May
PDX
Portland
LHR
London
AU$982 Return, found 5 days ago
AU$982
Return
found 5 days ago
Select Delta flight, departing Mon., 28 Apr. from Portland to London, returning Wed., 14 May, priced at AU$982 found 5 days ago
Delta
Mon., 28 Apr. - Wed., 14 May
PDX
Portland
LHR
London
AU$991 Return, found 5 days ago
AU$991
Return
found 5 days ago
Select Delta flight, departing Mon., 28 Apr. from Portland to London, returning Wed., 14 May, priced at AU$991 found 5 days ago
Air Canada
Mon., 28 Apr. - Wed., 14 May
PDX
Portland
LHR
London
AU$993 Return, found 5 days ago
AU$993
Return
found 5 days ago
Select Air Canada flight, departing Mon., 28 Apr. from Portland to London, returning Wed., 14 May, priced at AU$993 found 5 days ago
Air Canada
Tue., 23 Sep. - Tue., 30 Sep.
PDX
Portland
LHR
London
AU$1,001 Return, found 8 hours ago
AU$1,001
Return
found 8 hours ago
Select Air Canada flight, departing Tue., 23 Sep. from Portland to London, returning Tue., 30 Sep., priced at AU$1,001 found 8 hours ago
Air Canada
Mon., 28 Apr. - Wed., 14 May
PDX
Portland
LHR
London
AU$1,002 Return, found 5 days ago
AU$1,002
Return
found 5 days ago
Select Air Canada flight, departing Mon., 28 Apr. from Portland to London, returning Wed., 14 May, priced at AU$1,002 found 5 days ago
Virgin Atlantic
Mon., 28 Apr. - Wed., 14 May
PDX
Portland
LHR
London
AU$1,002 Return, found 5 days ago
AU$1,002
Return
found 5 days ago
Select Virgin Atlantic flight, departing Mon., 28 Apr. from Portland to London, returning Wed., 14 May, priced at AU$1,002 found 5 days ago
Delta
Tue., 23 Sep. - Tue., 30 Sep.
PDX
Portland
LHR
London
AU$1,019 Return, found 8 hours ago
AU$1,019
Return
found 8 hours ago
Select Delta flight, departing Tue., 23 Sep. from Portland to London, returning Tue., 30 Sep., priced at AU$1,019 found 8 hours ago
Virgin Atlantic
Mon., 28 Apr. - Wed., 14 May
PDX
Portland
LHR
London
AU$1,029 Return, found 5 days ago
AU$1,029
Return
found 5 days ago
Select Virgin Atlantic flight, departing Mon., 28 Apr. from Portland to London, returning Wed., 14 May, priced at AU$1,029 found 5 days ago
United
Tue., 23 Sep. - Tue., 30 Sep.
PDX
Portland
LHR
London
AU$1,030 Return, found 8 hours ago
AU$1,030
Return
found 8 hours ago
Select United flight, departing Tue., 23 Sep. from Portland to London, returning Tue., 30 Sep., priced at AU$1,030 found 8 hours ago
Flight from Portland to London route information
Origin airport
Portland Intl.
Destination airport
Heathrow
Return price
AU$966
Distance
7839 km

Your quick guide to flights from Portland to London

Pick up great flights from Portland to London

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Portland to London. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Portland to London that take around hours.

Find cheap flights from Portland to London

From the great flight deals with prices currently ranging from AU$967 to AU$1,030, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Portland to London around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to London is normally in October.

Reasons to book your flight from Portland to London with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Portland to London across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to London right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

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 AU$967. 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.

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