S$481 Cheap Flights from Portland to London

View S$481 flight on Wed, 28 Jan, 2026Opens 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 S$481 for one-way flights and S$825 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, 8 Mar - Sun, 22 Mar
PDX
Portland
LHR
London
S$825 Return, found 8 hours ago
S$825
Return
found 8 hours ago
Select Delta flight, departing Sun, 8 Mar from Portland to London, returning Sun, 22 Mar, priced at S$825 found 8 hours ago
Delta
Sun, 12 Apr - Sun, 10 May
PDX
Portland
LHR
London
S$843 Return, found 1 day ago
S$843
Return
found 1 day ago
Select Delta flight, departing Sun, 12 Apr from Portland to London, returning Sun, 10 May, priced at S$843 found 1 day ago
Delta
Sun, 8 Mar - Sun, 22 Mar
PDX
Portland
LHR
London
S$861 Return, found 8 hours ago
S$861
Return
found 8 hours ago
Select Delta flight, departing Sun, 8 Mar from Portland to London, returning Sun, 22 Mar, priced at S$861 found 8 hours ago
British Airways
Sun, 8 Mar - Sun, 22 Mar
PDX
Portland
LHR
London
S$864 Return, found 8 hours ago
S$864
Return
found 8 hours ago
Select British Airways flight, departing Sun, 8 Mar from Portland to London, returning Sun, 22 Mar, priced at S$864 found 8 hours ago
Delta
Sun, 8 Mar - Sun, 22 Mar
PDX
Portland
LHR
London
S$866 Return, found 8 hours ago
S$866
Return
found 8 hours ago
Select Delta flight, departing Sun, 8 Mar from Portland to London, returning Sun, 22 Mar, priced at S$866 found 8 hours ago
Virgin Atlantic
Sun, 8 Mar - Sun, 22 Mar
PDX
Portland
LHR
London
S$869 Return, found 8 hours ago
S$869
Return
found 8 hours ago
Select Virgin Atlantic flight, departing Sun, 8 Mar from Portland to London, returning Sun, 22 Mar, priced at S$869 found 8 hours ago
Virgin Atlantic
Sun, 12 Apr - Sun, 10 May
PDX
Portland
LHR
London
S$875 Return, found 1 day ago
S$875
Return
found 1 day ago
Select Virgin Atlantic flight, departing Sun, 12 Apr from Portland to London, returning Sun, 10 May, priced at S$875 found 1 day ago
Delta
Sun, 12 Apr - Sun, 10 May
PDX
Portland
LHR
London
S$879 Return, found 1 day ago
S$879
Return
found 1 day ago
Select Delta flight, departing Sun, 12 Apr from Portland to London, returning Sun, 10 May, priced at S$879 found 1 day ago
Air Canada
Sun, 12 Apr - Sun, 10 May
PDX
Portland
LHR
London
S$912 Return, found 1 day ago
S$912
Return
found 1 day ago
Select Air Canada flight, departing Sun, 12 Apr from Portland to London, returning Sun, 10 May, priced at S$912 found 1 day ago
United
Sun, 12 Apr - Sun, 10 May
PDX
Portland
LHR
London
S$912 Return, found 1 day ago
S$912
Return
found 1 day ago
Select United flight, departing Sun, 12 Apr from Portland to London, returning Sun, 10 May, priced at S$912 found 1 day ago

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

April is typically the cheapest month to fly

From S$633 - S$1,778 per traveller.

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city centre is 28 minutes. Flights from S$1,847
LHR
Heathrow
Cheapest
Average driving time to city centre28 min
Flights from S$1,847

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 S$825. 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

Origin airport
Portland Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, KLM, Lufthansa, United, Virgin Atlantic
Return price
S$824
Distance
7839 km
Average flight time
9 hours 35 mins

Book with confidence

Perfect flights from Portland to London

Your Journey from Portland to London

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Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Delta, Virgin Atlantic, British Airways, United, Air Canada, KLM. Our selection of flights from Portland Intl. to Heathrow caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

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Experience the joy of finding cheap flights from Portland Intl. to Heathrow that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$481 and roundtrip prices from S$825*.
 

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Experience the Vibrant London

Picture yourself stepping off the plane in London and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

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Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Portland to London.
 

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Book Your Flight from Portland to London with Confidence

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Portland to London

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