Cheap flights from Seattle to Dulles

Direct flight: 3,701 km, ~4h 21m from Seattle (SEA) to Dulles (IAD).

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Live fares · SEA → IAD

Frequently asked questions

  • How long is the flight from Seattle to Dulles?

    Direct flights from SEA to IAD cover approximately 3,701 km (2,300 miles), with an estimated flight time of 4h 21m. Operating airlines: AS, DL, UA.

Related guides for this route

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

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