£210 Cheap Flights from Portland (PDX) to London (LON)

View £210 flight on Mon, 4 Aug 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to London

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

Prices were available within the past 7 days and start at £210 for one-way flights and £387 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Fri, 24 Oct - Fri, 31 Oct
PDX
Portland
LHR
London
£387 Return, found 3 days ago
£387
Return
found 3 days ago
Select Icelandair flight, departing Fri, 24 Oct from Portland to London, returning Fri, 31 Oct, priced at £387 found 3 days ago
Icelandair
Fri, 24 Oct - Fri, 31 Oct
PDX
Portland
LGW
London
£387 Return, found 3 days ago
£387
Return
found 3 days ago
Select Icelandair flight, departing Fri, 24 Oct from Portland to London, returning Fri, 31 Oct, priced at £387 found 3 days ago
Virgin Atlantic
Mon, 22 Sep - Tue, 7 Oct
PDX
Portland
LHR
London
£398 Return, found 2 hours ago
£398
Return
found 2 hours ago
Select Virgin Atlantic flight, departing Mon, 22 Sep from Portland to London, returning Tue, 7 Oct, priced at £398 found 2 hours ago
Delta
Mon, 11 Aug - Wed, 27 Aug
PDX
Portland
LHR
London
£398 Return, just found
£398
Return
just found
Select Delta flight, departing Mon, 11 Aug from Portland to London, returning Wed, 27 Aug, priced at £398 just found
British Airways
Mon, 25 Aug - Tue, 9 Sep
PDX
Portland
LHR
London
£403 Return, found 15 hours ago
£403
Return
found 15 hours ago
Select British Airways flight, departing Mon, 25 Aug from Portland to London, returning Tue, 9 Sep, priced at £403 found 15 hours ago
American Airlines
Wed, 6 Aug - Tue, 12 Aug
PDX
Portland
LHR
London
£403 Return, found 13 hours ago
£403
Return
found 13 hours ago
Select American Airlines flight, departing Wed, 6 Aug from Portland to London, returning Tue, 12 Aug, priced at £403 found 13 hours ago
British Airways
Wed, 6 Aug - Tue, 12 Aug
PDX
Portland
LHR
London
£403 Return, found 13 hours ago
£403
Return
found 13 hours ago
Select British Airways flight, departing Wed, 6 Aug from Portland to London, returning Tue, 12 Aug, priced at £403 found 13 hours ago
Iberia
Sat, 16 Aug - Fri, 5 Sep
PDX
Portland
LHR
London
£407 Return, found 2 hours ago
£407
Return
found 2 hours ago
Select Iberia flight, departing Sat, 16 Aug from Portland to London, returning Fri, 5 Sep, priced at £407 found 2 hours ago
KLM
Wed, 6 Aug - Tue, 12 Aug
PDX
Portland
LHR
London
£407 Return, found 13 hours ago
£407
Return
found 13 hours ago
Select KLM flight, departing Wed, 6 Aug from Portland to London, returning Tue, 12 Aug, priced at £407 found 13 hours ago
Air France
Wed, 6 Aug - Tue, 12 Aug
PDX
Portland
LHR
London
£422 Return, found 13 hours ago
£422
Return
found 13 hours ago
Select Air France flight, departing Wed, 6 Aug from Portland to London, returning Tue, 12 Aug, priced at £422 found 13 hours ago

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

November is typically the cheapest month to fly

From £376 - £882 per traveller.

Graph displaying average flight prices per month

Flight from Portland to London route information
Origin airport
Portland Intl.
Destination airport
Heathrow
Return price
£387
Distance
7839 km

Compare flights from Portland to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Portland to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to LON-All Airports in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Portland Intl. to LON-All Airports.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Portland Intl. (PDX) to LON-All Airports (LON)

The easiest way to view the best deals on flights from Portland to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Portland Intl. to LON-All Airports start at just £387 and range up to £422.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Portland and London
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Portland to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Portland Intl. to LON-All Airports for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from PDX to London (LON-All Airports)?
Round-trip tickets between PDX Airport and London (LON-All Airports) start from £387. This is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book ASAP so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from PDX Airport to London (LON-All Airports)?
We get that your situation can change unexpectedly, so we've made it as hassle-free as possible for you to cancel your trip online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Portland Intl. Airport (PDX) to London (LON-All Airports) 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 London (LON-All Airports) 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 (LON-All Airports)?
The distance is around 7,900 kilometres, so pack your carry-on luggage with all the things you need to make the long journey comfortable. Not sure what to take on board your Portland to England flight? A neck pillow, earplugs and a sleep mask are among the essentials.
Which airlines fly direct from Portland Intl. Airport (PDX) to London (LON-All Airports)?
Flying straight from PDX to London (LON-All Airports) is simple with British Airways (BA). This top airline operates 17 flights every month.
Are PDX Airport to London (LON-All Airports) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from PDX to London (LON-All Airports) at the last minute could be your ticket to a cheap deal. However, it could end up costing a great deal more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back often as deals are updated all the time on Expedia.

Explore a world of travel with Expedia

London Airports

London

Portland to Heathrow
£386.52
Portland to Gatwick
£386.58

Southampton

Portland to Southampton
£646.34
*Available to Expedia members.