Skip to main content
Beginning of main content

Cheap Flights from Portland to London $546.09

Search over 321,000 hotels worldwide and 400 airlines worldwide.
Secure incredible value with Expedia’s Price Pledge
No Expedia cancellation fee to change or cancel almost any hotel reservation.

Cheapest Flights from Portland to London (PDX to LHR)

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Portland to London (PDX to LHR)

Question : Interested in traveling in the next 30 days and want to get the lowest fare?
Answer : Since low prices are preferred, look at December 20th. As of December 5th, the cheapest ticket sales are coming in 43% below the average price for this route, so you can spend that extra cash on a fun experience in London.

Question : How many days should you spend in London if you're flying in from Portland?
Answer : Travelers from PDX to LHR stay nine days on average.

Question : Can you cut down on flight costs by changing the day of the week you travel to London?
Answer : For the month of December, the cheapest day to fly is Monday. Being flexible with your travel days garners you even more savings during your booking.

Question : Over the coming months, which airline is getting its passengers to London Heathrow Airport (LHR) round-trip the cheapest?
Answer : Check out Air Canada, as they have been booking customers at lower fares than most.