£441 Cheap United flights from London to Portland (LHR→PDX)

View £441 flight on Tue, 22 Sept 2026Opens in a new window

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

United flights from London to Portland (LHR→PDX)

Prices were available within the past 7 days and start at £441 for one-way flights and £636 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, 11 Mar - Mon, 16 Mar
LHR
London
PDX
Portland
£636 Return, found 1 day ago
£636
Return
found 1 day ago
Select United flight, departing Wed, 11 Mar from London to Portland, returning Mon, 16 Mar, priced at £636 found 1 day ago

Alternative airports near Portland

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Portland Intl. PDX. Cheapest and Closest option available. Average driving time to city centre is 17 minutes. Flights from £666
PDX
Portland Intl.
CheapestClosest
Average driving time to city centre17 min
Flights from £666

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

September is typically the cheapest month to fly

From £431 - £884 per traveller.
Flight from London to Portland route information
Origin airport
Heathrow
Destination airport
Portland Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, United, Virgin Atlantic, WestJet
Popular airline
Virgin Atlantic
Distance
7839 km
Average flight time
10 hours 10 mins

The Annual Holiday Sale

Members save up to 40% on hotels and holiday homes. Plan this year’s big trip and save.
Book now

Explore a world of travel with Expedia

*Available to Expedia members.