Cheap flights from Boston to Seattle

Direct flight: 4,004 km, ~4h 43m from Boston (BOS) to Seattle (SEA).

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Live fares · BOS → SEA

Frequently asked questions

  • How long is the flight from Boston to Seattle?

    Direct flights from BOS to SEA cover approximately 4,004 km (2,488 miles), with an estimated flight time of 4h 43m. Operating airlines: AS, B6, DL.

Related guides for this route

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

Full route page: BOS → SEA Cheapest month to fly to Seattle All flights from Boston All flights to Seattle Flights to USA Visa-free with USA passport AS routes B6 routes DL routes