$105 Cheap Frontier Airlines flights Philadelphia (PHL) to Seattle (SEA)

$105 Cheap Frontier Airlines flights Philadelphia (PHL) to Seattle (SEA)

Prices were available within the past 7 days and start at $105 for one-way flights and $341 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Aug 3 - Thu, Aug 21

PHL

Philadelphia

SEA

Seattle

$341 Roundtrip, found 1 day ago

$341

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Aug 3 from Philadelphia to Seattle, returning Thu, Aug 21, priced at $341 found 1 day ago

Mon, Aug 4 - Mon, Aug 18

PHL

Philadelphia

PAE

Seattle

$381 Roundtrip, found 1 day ago

$381

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Aug 4 from Philadelphia to Seattle, returning Mon, Aug 18, priced at $381 found 1 day ago

Mon, Aug 4 - Mon, Aug 18

PHL

Philadelphia

PAE

Seattle

$456 Roundtrip, found 1 day ago

$456

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Aug 4 from Philadelphia to Seattle, returning Mon, Aug 18, priced at $456 found 1 day ago