Cheap Frontier Airlines flights Philadelphia (PHL) to Seattle (SEA)

Cheap Frontier Airlines flights Philadelphia (PHL) to Seattle (SEA)

Prices were available within the past 7 days and start at for one-way flights and $334 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Oct 27 - Thu, Nov 6

PHL

Philadelphia

SEA

Seattle

$334 Roundtrip, found 2 days ago

$334

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Oct 27 from Philadelphia to Seattle, returning Thu, Nov 6, priced at $334 found 2 days ago

Mon, Oct 20 - Thu, Oct 23

PHL

Philadelphia

SEA

Seattle

$339 Roundtrip, found 1 day ago

$339

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Oct 20 from Philadelphia to Seattle, returning Thu, Oct 23, priced at $339 found 1 day ago