Cheap flights from Boston to San Francisco

Direct flight: 4,341 km, ~5h 6m from Boston (BOS) to San Francisco (SFO).

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Live fares · BOS → SFO

Frequently asked questions

  • How long is the flight from Boston to San Francisco?

    Direct flights from BOS to SFO cover approximately 4,341 km (2,697 miles), with an estimated flight time of 5h 6m. Operating airlines: B6, DL, UA.

Related guides for this route

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

Full route page: BOS → SFO Cheapest month to fly to San Francisco All flights from Boston All flights to San Francisco Flights to USA Visa-free with USA passport B6 routes DL routes UA routes