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Cheap Flights from Portland to London $677.53

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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 : December 25th offers bookings (as of December 5th) that are 11% below the average price for this route. Saving now means you'll have more money to spend on your trip.

Question : How long are most people's visits to London when they fly in from Portland?
Answer : Over the next two months, passengers from PWM to LHR are planning on staying for 10 days on average.

Question : Will you do what it takes to get the absolute lowest-cost flight?
Answer : Sunday is your cheapest day to fly in December. Having flexibility in your travel plans means you can save, so be sure to plan ahead when possible.

Question : Are prices changing frequently for this route?
Answer : Prices are fluctuating much more for this route than most routes. Remember, you can save by booking further in advance.