Cheap flights from Seattle to Ontario

Direct flight: 1,540 km, ~1h 49m from Seattle (SEA) to Ontario (ONT).

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Live fares · SEA → ONT

Frequently asked questions

  • How long is the flight from Seattle to Ontario?

    Direct flights from SEA to ONT cover approximately 1,540 km (957 miles), with an estimated flight time of 1h 49m. Operating airlines: AS, DL, F9.

Related guides for this route

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

Full route page: SEA → ONT Cheapest month to fly to Ontario All flights from Seattle All flights to Ontario Flights to USA Visa-free with USA passport AS routes DL routes F9 routes