Cheap flights from Philadelphia to San Francisco

Cheapest current fares: $150 in May 2026, 4,049 km direct flight in ~4h 46m.

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Live fares · PHL → SFO

Cheapest month-by-month fares

Lowest available fare per calendar month from Philadelphia (PHL) to San Francisco (SFO). Refreshed daily.

Philadelphia (PHL) → San Francisco (SFO)

  1. May 2026 $150
  2. June 2026 $180

Frequently asked questions

  • What is the cheapest month to fly from Philadelphia to San Francisco?

    Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Philadelphia (PHL) to San Francisco (SFO), with fares starting from $150.

  • What is the lowest current fare from PHL to SFO?

    The lowest currently-listed fare from Philadelphia (PHL) to San Francisco (SFO) is $150 on 2026-05-29.

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

    Direct flights from PHL to SFO cover approximately 4,049 km (2,516 miles), with an estimated flight time of 4h 46m. Operating airlines: AA, UA.

Related guides for this route

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

Full route page: PHL → SFO Cheapest month to fly to San Francisco All flights from Philadelphia All flights to San Francisco Flights to USA Visa-free with USA passport AA routes UA routes