$78 Cheap Frontier Airlines flights Philadelphia (PHL) to Seattle (SEA)

$78 Cheap Frontier Airlines flights Philadelphia (PHL) to Seattle (SEA)

Prices were available within the past 7 days and start at $78 for one-way flights and $220 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov 20 - Fri, Dec 5

PHL

Philadelphia

SEA

Seattle

$220 Roundtrip, found 1 day ago

$220

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Nov 20 from Philadelphia to Seattle, returning Fri, Dec 5, priced at $220 found 1 day ago

Mon, Mar 2 - Mon, Mar 9

PHL

Philadelphia

SEA

Seattle

$224 Roundtrip, found 22 hours ago

$224

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Mon, Mar 2 from Philadelphia to Seattle, returning Mon, Mar 9, priced at $224 found 22 hours ago

Mon, Nov 24 - Fri, Dec 5

PHL

Philadelphia

SEA

Seattle

$240 Roundtrip, found 1 day ago

$240

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Nov 24 from Philadelphia to Seattle, returning Fri, Dec 5, priced at $240 found 1 day ago

Mon, Mar 2 - Fri, Mar 6

PHL

Philadelphia

SEA

Seattle

$274 Roundtrip, found 22 hours ago

$274

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Mon, Mar 2 from Philadelphia to Seattle, returning Fri, Mar 6, priced at $274 found 22 hours ago

Sat, Nov 22 - Fri, Dec 5

PHL

Philadelphia

SEA

Seattle

$275 Roundtrip, found 1 day ago

$275

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Nov 22 from Philadelphia to Seattle, returning Fri, Dec 5, priced at $275 found 1 day ago

Fri, Nov 21 - Fri, Dec 5

PHL

Philadelphia

SEA

Seattle

$340 Roundtrip, found 1 day ago

$340

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Nov 21 from Philadelphia to Seattle, returning Fri, Dec 5, priced at $340 found 1 day ago