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Flights London Seattle

Special flight deals from London to Seattle

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  • Largest choice of flights

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Find the best time to book cheap flights to Seattle

Flexible on travel dates? Discover the cheapest month to fly to Seattle

  • Cheapest round-trip flight

    from £ 471

  • Cheapest month to travel

    February

  • The cheapest day to fly

    Monday

  • Lowest prices

    3 months before
Nov
£ 526
Dec
£ 652
Jan
£ 499
Feb
£ 471
Mar
£ 484
Apr
£ 498
May
£ 524
Jun
£ 524
Jul
£ 616
Aug
£ 752
Sept
£ 562
Oct
£ 543

When is the best time to buy flight tickets?

Find out how far in advance it's worth booking round-trip flights.

  • 6 months before

    from

    £1,629

  • 3 months before

    from

    £968

  • 30 days before

    from

    £1,265

  • 7 days before

    from

    £1,135

  • 1 day before

    from

    £1,732

Discover the cheapest day to fly

Discover on which day of the week flights are usually the most affordable.
£659
Mon
£1,404
Tue
£1,312
Wed
£1,265
Thu
£1,573
Fri
£1,479
Sat
£1,211
Sun

General information

  • Local time (UTC-8)

  • Exchange Rate

    1 USD = 0.76 GBP
Seattle
Seattle, the largest city in the state of Washington, is situated between Puget Sound and Lake Washington, about 175 km from the Canadian border. Home to about 684,451 people in 2015, it is known as the "Emerald City" and serves as an important seaport and air gateway for trade with Asia. Seattle attracts visitors with the Space Needle, Pike Place Market, and the Museum of Pop Culture. The climate is temperate, with mild winters and cool summers. The best time to visit is summer, when temperatures are pleasant.

Popular flights to United States of America