Cheap flights from Seattle to London

Direct flight: 7,703 km, ~9h 4m from Seattle (SEA) to London (LHR).

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Live fares · SEA → LHR

Frequently asked questions

  • How long is the flight from Seattle to London?

    Direct flights from SEA to LHR cover approximately 7,703 km (4,786 miles), with an estimated flight time of 9h 4m. Operating airlines: AS, BA, DL, VS.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.

Full route page: SEA → LHR Cheapest month to fly to London All flights from Seattle All flights to London Flights to United Kingdom Visa-free with USA passport AS routes BA routes DL routes