Flights to Great Britain from Seattle - ￥27,326

View ￥27,326 flight on Wed, Oct 8, 2025Opens in a new window

Popular airlines from Seattle to Great Britain

  • American Airlines

    American Airlines

  • Air Canada

    Air Canada

  • British Airways

    British Airways

  • Delta

    Delta

  • Icelandair

    Icelandair

  • Lufthansa

    Lufthansa

  • United

    United

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seattle to Great Britain (SEA-LON)

Prices were available within the past 7 days and start at ￥27,326 for one-way flights and ￥73,090 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Mar 18 - Tue, Mar 24
SEA
Seattle
LHR
London
￥73,090 Roundtrip, found 6 days ago
￥73,090
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Mar 18 from Seattle to London, returning Tue, Mar 24, priced at ￥73,090 found 6 days ago
United
Wed, Mar 18 - Tue, Mar 24
SEA
Seattle
LHR
London
￥73,090 Roundtrip, found 6 days ago
￥73,090
Roundtrip
found 6 days ago
Select United flight, departing Wed, Mar 18 from Seattle to London, returning Tue, Mar 24, priced at ￥73,090 found 6 days ago
Virgin Atlantic
Sun, Aug 17 - Tue, Aug 26
SEA
Seattle
LHR
London
￥75,050 Roundtrip, found 6 days ago
￥75,050
Roundtrip
found 6 days ago
Select Virgin Atlantic flight, departing Sun, Aug 17 from Seattle to London, returning Tue, Aug 26, priced at ￥75,050 found 6 days ago
Air Canada
Wed, Mar 18 - Tue, Mar 24
SEA
Seattle
LHR
London
￥75,070 Roundtrip, found 6 days ago
￥75,070
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Mar 18 from Seattle to London, returning Tue, Mar 24, priced at ￥75,070 found 6 days ago
Delta
Tue, Aug 19 - Tue, Aug 26
SEA
Seattle
LHR
London
￥75,860 Roundtrip, found 6 days ago
￥75,860
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Aug 19 from Seattle to London, returning Tue, Aug 26, priced at ￥75,860 found 6 days ago
Icelandair
Mon, Dec 1 - Wed, Dec 10
SEA
Seattle
LGW
London
￥75,970 Roundtrip, found 19 hours ago
￥75,970
Roundtrip
found 19 hours ago
Select Icelandair flight, departing Mon, Dec 1 from Seattle to London, returning Wed, Dec 10, priced at ￥75,970 found 19 hours ago

Find the cheapest month to fly from Seattle (SEA) to London (LHR)

October is typically the cheapest month to fly

From ￥72,739 - ￥127,530 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.