Search flights from London (LON) to Portland (PWM)

Book your plane tickets from London to Portland with ease

Cheapest flights to Portland

The cheapest flights available in the next 60 days – prices are updated regularly

Tue 4 Nov
US$754.81
One way
Economy
1 traveller
Sat 8 Nov
US$764.88
One way
Economy
1 traveller
Thu 6 Nov
US$767.54
One way
Economy
1 traveller

Flying from London to Portland: things to know

The most popular route is from London Heathrow Airport in London to Portland International Jetport in Portland. On average this flight takes 12 hours 33 minutes one way and costs US$858 for the round trip.

Most popular route
London Heathrow Airport (LHR) to Portland International Jetport (PWM)
Average flight time
12 hours 33 minutes
Average round-trip price
US$858
Fly from London to Portland
4 airlines

Reasons to book flights with Booking.com

  • Great selection

    Easily compare flights, airlines and prices – all in one place

  • No hidden fees

    Always know exactly what you’re paying for

  • Flexibility

    Use our flexible plane ticket option to change your dates if needed

Flexible plane ticket options are available for an additional cost on selected airfares

Airlines that fly from London to Portland

Airline options may vary according to recently booked flights and your search terms

  • United Airlines
  • JetBlue
  • American Airlines
  • Austrian Airlines

Frequently asked questions

Fly to more destinations from London

Research, refine and make plans for your whole trip

Flights to Maine

Get your flight tickets to Maine right here on Booking.com.

Flights from London to the United States

Plan your next getaway from London.

Flights from the United Kingdom to the United States

More options to fly to the United States.

All flights

Fly to your next dream destination.

Hotels in Portland

A popular choice with visitors to the United States.