S$540 Cheap Flights from Portland to London

View S$540 flight on Tue, 19 Aug, 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 S$540 for one-way flights and S$706 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Tue, 19 Aug - Tue, 26 Aug
PDX
Portland
LHR
London
S$706 Return, found 2 days ago
S$706
Return
found 2 days ago
Select Virgin Atlantic flight, departing Tue, 19 Aug from Portland to London, returning Tue, 26 Aug, priced at S$706 found 2 days ago
Delta
Tue, 19 Aug - Tue, 26 Aug
PDX
Portland
LHR
London
S$773 Return, found 2 days ago
S$773
Return
found 2 days ago
Select Delta flight, departing Tue, 19 Aug from Portland to London, returning Tue, 26 Aug, priced at S$773 found 2 days ago
Air France
Tue, 19 Aug - Tue, 26 Aug
PDX
Portland
LHR
London
S$798 Return, found 2 days ago
S$798
Return
found 2 days ago
Select Air France flight, departing Tue, 19 Aug from Portland to London, returning Tue, 26 Aug, priced at S$798 found 2 days ago
United
Wed, 8 Oct - Mon, 20 Oct
PDX
Portland
LHR
London
S$854 Return, found 11 hours ago
S$854
Return
found 11 hours ago
Select United flight, departing Wed, 8 Oct from Portland to London, returning Mon, 20 Oct, priced at S$854 found 11 hours ago
United
Tue, 19 Aug - Tue, 26 Aug
PDX
Portland
LHR
London
S$859 Return, found 2 days ago
S$859
Return
found 2 days ago
Select United flight, departing Tue, 19 Aug from Portland to London, returning Tue, 26 Aug, priced at S$859 found 2 days ago
Delta
Tue, 19 Aug - Tue, 26 Aug
PDX
Portland
LHR
London
S$859 Return, found 2 days ago
S$859
Return
found 2 days ago
Select Delta flight, departing Tue, 19 Aug from Portland to London, returning Tue, 26 Aug, priced at S$859 found 2 days ago
Air Canada
Wed, 8 Oct - Mon, 20 Oct
PDX
Portland
LHR
London
S$878 Return, found 11 hours ago
S$878
Return
found 11 hours ago
Select Air Canada flight, departing Wed, 8 Oct from Portland to London, returning Mon, 20 Oct, priced at S$878 found 11 hours ago
United
Wed, 8 Oct - Mon, 20 Oct
PDX
Portland
LHR
London
S$885 Return, found 11 hours ago
S$885
Return
found 11 hours ago
Select United flight, departing Wed, 8 Oct from Portland to London, returning Mon, 20 Oct, priced at S$885 found 11 hours ago
Lufthansa
Wed, 8 Oct - Mon, 20 Oct
PDX
Portland
LHR
London
S$886 Return, found 11 hours ago
S$886
Return
found 11 hours ago
Select Lufthansa flight, departing Wed, 8 Oct from Portland to London, returning Mon, 20 Oct, priced at S$886 found 11 hours ago
United
Tue, 19 Aug - Tue, 26 Aug
PDX
Portland
LHR
London
S$903 Return, found 2 days ago
S$903
Return
found 2 days ago
Select United flight, departing Tue, 19 Aug from Portland to London, returning Tue, 26 Aug, priced at S$903 found 2 days ago

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

October is typically the cheapest month to fly

From S$634 - S$1,389 per traveller.

Graph displaying average flight prices per month

Portland to London route information
Origin airport
Portland Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, Swiss International Air Lines, United, Virgin Atlantic
Return price
S$706
Distance
7839 km
Average flight time
9 hours 35 mins

Perfect flights from Portland to London

Your Journey from Portland to London

Start your unforgettable journey with Expedia. Our broad selection of flights from Portland to London caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including United, Virgin Atlantic, Delta, British Airways, KLM, Air France, Air Canada, Lufthansa. 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.
 

Maximizing Value with Portland to London Flights

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$540 and roundtrip prices from S$706*.
 

Pre-Flight Essentials

Ensure a smooth journey from Portland to London with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

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.
 

Added Convenience on Your Portland to London Flight

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.
 

Beyond the Flight – Exploring London

With Expedia, your adventure extends beyond the flight. Explore London at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Portland to London with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Portland to London with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

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$706. 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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