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Flights to Seattle from London

Cheap flights from London to Seattle from £1,381. London (United Kingdom) - Seattle (United States) return flights from £443. From 18/11/2026 (Wednesday) - 26/11/2026 (Thursday). Check for the dates with the lowest prices and find the cheapest rates.

Round-trip flights from London to Seattle

Cheapest round-trip flights from London to Seattle

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Direct flights from London to Seattle

Book direct flights from London to Seattle for a smooth journey.

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Cheap flights from London Heathrow Airport to Seattle

Find cheap flights from London Heathrow Airport to Seattle now.

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British Airways flights from London to Seattle

Fly with British Airways from London to Seattle for less.

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Flights to Seattle with top airlines

London to Seattle flight information

DEPARTING FROM:
LON - All airports, London Heathrow Airport, Gatwick
ARRIVING IN:
SEA - All airports
AIRLINES:
Alaska Airlines, British Airways, Delta Air Lines, more
AVG FLIGHT TIME:
11h 21m

More information about flights to Seattle from London

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FAQs London to Seattle flights

FAQs

  • Can I combine different airlines on the same trip?

    Of course. We offer you the possibility of booking with more than 400 airlines so that you can find the cheapest fare or the most convenient combination: outbound flight with one airline and return flight with another.

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    In 1998, lastminute.com was one of the first online travel agencies. Currently, we are selling over 380,000 flights per year – and working hard on bringing travellers wherever they want to go.

  • What options are there if I have to change my flight?

    lastminute.com offers flexibility services for purchase at the time of your booking. These services entitle you to change or cancel your flights without handling fee.*

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    lastminute.com offers a range of baggage protection services, so that you are covered in case your luggage is delayed or lost.**

  • How long does a flight take between London and Seattle?

    The flight from London to Seattle has a duration of 11h 21m.

  • What are the cheapest flights from London to Seattle?

    The cheapest one-way flight costs £1,381 flying with British Airways and the cheapest return flight costs £443 with Virgin Atlantic Airways.

  • How many airports are there in the city of London?

    London has 3 airport: LON - All airports, London Heathrow Airport, Gatwick.

  • How many airports does Seattle have?

    There are 1 airports in Seattle: SEA - All airports

  • Which Seattle airport is the most central?

    The most central airport is SEA - All airports, 3.3km.

  • Which airlines have flights from London to Seattle?

    There are 4 airlines with flights from London to Seattle; Those that offer lower prices are British Airways (£1,381), Virgin Atlantic Airways (£1,393).

  • Schedules of the first and last flight from London to Seattle

    The first flight from London to Seattle is at 11:35 and the last flight departs at 20:53.