S$542 Cheap Flights from Portland to London

View S$542 flight on Tue, 5 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$542 for one-way flights and S$1,102 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 2 Aug - Sat, 9 Aug
PDX
Portland
LHR
London
S$1,102 Return, found 23 hours ago
S$1,102
Return
found 23 hours ago
Select Delta flight, departing Sat, 2 Aug from Portland to London, returning Sat, 9 Aug, priced at S$1,102 found 23 hours ago
Delta
Sat, 2 Aug - Sat, 9 Aug
PDX
Portland
LHR
London
S$1,109 Return, found 23 hours ago
S$1,109
Return
found 23 hours ago
Select Delta flight, departing Sat, 2 Aug from Portland to London, returning Sat, 9 Aug, priced at S$1,109 found 23 hours ago
United
Sat, 2 Aug - Sat, 9 Aug
PDX
Portland
LHR
London
S$1,150 Return, found 23 hours ago
S$1,150
Return
found 23 hours ago
Select United flight, departing Sat, 2 Aug from Portland to London, returning Sat, 9 Aug, priced at S$1,150 found 23 hours ago
United
Sat, 2 Aug - Sat, 9 Aug
PDX
Portland
LHR
London
S$1,175 Return, found 23 hours ago
S$1,175
Return
found 23 hours ago
Select United flight, departing Sat, 2 Aug from Portland to London, returning Sat, 9 Aug, priced at S$1,175 found 23 hours ago
KLM
Sat, 2 Aug - Sat, 9 Aug
PDX
Portland
LHR
London
S$1,175 Return, found 23 hours ago
S$1,175
Return
found 23 hours ago
Select KLM flight, departing Sat, 2 Aug from Portland to London, returning Sat, 9 Aug, priced at S$1,175 found 23 hours ago
Delta
Sat, 2 Aug - Sat, 9 Aug
PDX
Portland
LHR
London
S$1,230 Return, found 23 hours ago
S$1,230
Return
found 23 hours ago
Select Delta flight, departing Sat, 2 Aug from Portland to London, returning Sat, 9 Aug, priced at S$1,230 found 23 hours ago
Delta
Sat, 2 Aug - Sat, 9 Aug
PDX
Portland
LHR
London
S$1,270 Return, found 23 hours ago
S$1,270
Return
found 23 hours ago
Select Delta flight, departing Sat, 2 Aug from Portland to London, returning Sat, 9 Aug, priced at S$1,270 found 23 hours ago
United
Sat, 2 Aug - Sat, 9 Aug
PDX
Portland
LHR
London
S$1,271 Return, found 23 hours ago
S$1,271
Return
found 23 hours ago
Select United flight, departing Sat, 2 Aug from Portland to London, returning Sat, 9 Aug, priced at S$1,271 found 23 hours ago
British Airways
Sat, 2 Aug - Sat, 9 Aug
PDX
Portland
LHR
London
S$1,273 Return, found 23 hours ago
S$1,273
Return
found 23 hours ago
Select British Airways flight, departing Sat, 2 Aug from Portland to London, returning Sat, 9 Aug, priced at S$1,273 found 23 hours ago
American Airlines
Sat, 2 Aug - Sat, 9 Aug
PDX
Portland
LHR
London
S$1,358 Return, found 23 hours ago
S$1,358
Return
found 23 hours ago
Select American Airlines flight, departing Sat, 2 Aug from Portland to London, returning Sat, 9 Aug, priced at S$1,358 found 23 hours ago

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

October is typically the cheapest month to fly

From S$622 - S$1,404 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, United, Virgin Atlantic, WestJet
Return price
S$1,101
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 Canada, American Airlines. 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$542 and roundtrip prices from S$1,102*.
 

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$1,102. 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.

Explore a world of travel with Expedia

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