Cheap flights from Seattle to Philadelphia

Cheapest current fares: $182 in June 2026, 3,817 km direct flight in ~4h 29m.

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Live fares · SEA → PHL

Cheapest month-by-month fares

Lowest available fare per calendar month from Seattle (SEA) to Philadelphia (PHL). Refreshed daily.

Seattle (SEA) → Philadelphia (PHL)

  1. June 2026 $182

Frequently asked questions

  • What is the cheapest month to fly from Seattle to Philadelphia?

    Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Seattle (SEA) to Philadelphia (PHL), with fares starting from $182.

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

    The lowest currently-listed fare from Seattle (SEA) to Philadelphia (PHL) is $182 on 2026-06-01.

  • How long is the flight from Seattle to Philadelphia?

    Direct flights from SEA to PHL cover approximately 3,817 km (2,372 miles), with an estimated flight time of 4h 29m. Operating airlines: AA, AS, DL.

Related guides for this route

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

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