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

View AU$536 flight on Thu, 24 Sept 2026Opens 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.

Virgin Atlantic
Sun, 3 May - Tue, 19 May
PDX
Portland
LHR
London
AU$1,647 Return, found 2 days ago
AU$1,647
Return
found 2 days ago
Select Virgin Atlantic flight, departing Sun, 3 May from Portland to London, returning Tue, 19 May, priced at AU$1,647 found 2 days ago
KLM
Sun, 3 May - Tue, 19 May
PDX
Portland
LHR
London
AU$1,725 Return, found 2 days ago
AU$1,725
Return
found 2 days ago
Select KLM flight, departing Sun, 3 May from Portland to London, returning Tue, 19 May, priced at AU$1,725 found 2 days ago
British Airways
Sun, 3 May - Tue, 19 May
PDX
Portland
LHR
London
AU$1,725 Return, found 2 days ago
AU$1,725
Return
found 2 days ago
Select British Airways flight, departing Sun, 3 May from Portland to London, returning Tue, 19 May, priced at AU$1,725 found 2 days ago
American Airlines
Sun, 3 May - Tue, 19 May
PDX
Portland
LHR
London
AU$1,965 Return, found 2 days ago
AU$1,965
Return
found 2 days ago
Select American Airlines flight, departing Sun, 3 May from Portland to London, returning Tue, 19 May, priced at AU$1,965 found 2 days ago
American Airlines
Sun, 3 May - Tue, 19 May
PDX
Portland
LHR
London
AU$1,974 Return, found 2 days ago
AU$1,974
Return
found 2 days ago
Select American Airlines flight, departing Sun, 3 May from Portland to London, returning Tue, 19 May, priced at AU$1,974 found 2 days ago
American Airlines
Sun, 3 May - Tue, 19 May
PDX
Portland
LHR
London
AU$1,984 Return, found 2 days ago
AU$1,984
Return
found 2 days ago
Select American Airlines flight, departing Sun, 3 May from Portland to London, returning Tue, 19 May, priced at AU$1,984 found 2 days ago
British Airways
Sun, 3 May - Tue, 19 May
PDX
Portland
LHR
London
AU$1,993 Return, found 2 days ago
AU$1,993
Return
found 2 days ago
Select British Airways flight, departing Sun, 3 May from Portland to London, returning Tue, 19 May, priced at AU$1,993 found 2 days ago
American Airlines
Sun, 3 May - Tue, 19 May
PDX
Portland
LHR
London
AU$1,993 Return, found 2 days ago
AU$1,993
Return
found 2 days ago
Select American Airlines flight, departing Sun, 3 May from Portland to London, returning Tue, 19 May, priced at AU$1,993 found 2 days ago
British Airways
Sun, 3 May - Tue, 19 May
PDX
Portland
LHR
London
AU$2,004 Return, found 2 days ago
AU$2,004
Return
found 2 days ago
Select British Airways flight, departing Sun, 3 May from Portland to London, returning Tue, 19 May, priced at AU$2,004 found 2 days ago
Alaska Airlines
Sun, 3 May - Tue, 19 May
PDX
Portland
LHR
London
AU$2,130 Return, found 2 days ago
AU$2,130
Return
found 2 days ago
Select Alaska Airlines flight, departing Sun, 3 May from Portland to London, returning Tue, 19 May, priced at AU$2,130 found 2 days ago

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

April is typically the cheapest month to fly

From AU$881 - AU$2,268 per traveller.

Frequently asked questions

How much does a flight from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) cost?
One-way flights typically cost between $599 and $3,397 and return flights often range between $1,212 and $9,209. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
Which airlines fly direct from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
Enter PDX to LHR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
To find a cheap flight from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
The best airline to fly with from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) will differ from traveller to traveller. If you like to fly early, BA offers early morning flights. If price is the most important factor, BA typically offers the lowest fares. AS offers the most daily flights from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
There is approximately 1 nonstop flight per day from Portland, OR (PDX-Portland Intl.) (PDX) to London (LHR-Heathrow) (LHR). For even more choice, look at flights that include layovers. You'll find around 72 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), O'Hare Intl. (ORD), and Vancouver Intl. (YVR).
What is the earliest flight from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
The earliest flight from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) typically departs at approximately 12:05 AM local time. This service is operated by American Airlines and is seasonal, active only in July. An early departure like this can help you make the most of your time in London. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
If you're flying from Portland Intl. (PDX) to London Heathrow (LHR), you'll typically find the most flights on a Thursday, with around 96 flights available. This gives you plenty of options to choose from. Major airlines on this route include Delta, Alaska Airlines, and United Airlines. Looking at the overall week, flight options are fairly consistent, with Thursdays offering notably more flight options compared to other days.
What are the most popular departure times for flights from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
The most popular departure times for flights from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) are in the arvo, from 12pm to 3pm. Around 27 AUD% of passengers reckon this time's best. Heaps of major carriers, including American Airlines, Delta and United Airlines, offer flights during this window. This timing works well because it allows you to have a productive morning before heading to the airport, and you'll arrive in London in the morning, ready to start your day.
How long does it take to fly from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
A nonstop flight from PDX to LHR typically takes around 9 hours 30 minutes, covering approximately 4,900 miles. Connecting flights on this route usually add 6 hours 20 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
Select the "Business class" and "First class" filters when looking for PDX to LHR flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) flight with Expedia?
It's easy to earn miles on a Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London from Portland Intl. (PDX)?
From Portland Intl. (PDX), you can fly into London Intl. (YXU), Gatwick (LGW), London City (LCY) and Heathrow (LHR) in London. Some flights may connect through major hubs like O'Hare Intl. (ORD), Vancouver Intl. (YVR), San Francisco Intl. (SFO) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) at the last minute?
Typically, booking a last minute flight from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) flight and hotel package?
Securing a Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow)?
If you booked your Portland, OR (PDX-Portland Intl.) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Portland Intl.
Destination airport
Heathrow
Return price
AU$1,646
Distance
7839 km
Average flight time
9 hours 30 mins

Book with confidence

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$1,647 to AU$2,130, 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 May.

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.

Your quick guide to flights from Portland to London

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