Skip to main content
Beginning of main content

Cheap Flights from Portland to London $779.93

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

Cheapest Flights from Portland to London (PWM 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 (PWM to LHR)

Question : What is the cheapest day to fly in the next four weeks?
Answer : As of Apr 17th, the cheapest day to fly from Portland to London is Apr 26th. Tickets are currently being sold for $742, which is 36% below the average price for this route.

Question : How much should a trip from Portland (PWM) to London (LHR) cost?
Answer : Flight prices fluctuate a lot more than most routes from the United States for PWM to LHR. They range anywhere from $742 to $4,206. The further out you book a route, the more likely you are to save.

Question : Will you do what it takes to get the absolute lowest-cost flight?
Answer : In May, the cheapest day to fly is Saturday. Being flexible with your travel days garners even more savings during booking.

Question : How long do most people visit London?
Answer : Of course you're not most people, but if you were, you'd stay roughly 10 days.