$156 Cheap Frontier Airlines flights Philadelphia (PHL) to Seattle (SEA)

$156 Cheap Frontier Airlines flights Philadelphia (PHL) to Seattle (SEA)

Prices were available within the past 7 days and start at $156 for one-way flights and $220 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, May 18 - Tue, May 26

PHL

Philadelphia

SEA

Seattle

$220 Roundtrip, found 6 days ago

$220

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, May 18 from Philadelphia to Seattle, returning Tue, May 26, priced at $220 found 6 days ago

Mon, May 18 - Fri, May 29

PHL

Philadelphia

SEA

Seattle

$225 Roundtrip, found 6 days ago

$225

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, May 18 from Philadelphia to Seattle, returning Fri, May 29, priced at $225 found 6 days ago

Tue, Jun 16 - Mon, Jun 22

PHL

Philadelphia

SEA

Seattle

$240 Roundtrip, found 17 hours ago

$240

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Tue, Jun 16 from Philadelphia to Seattle, returning Mon, Jun 22, priced at $240 found 17 hours ago

Wed, May 20 - Fri, May 29

PHL

Philadelphia

SEA

Seattle

$245 Roundtrip, found 6 days ago

$245

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, May 20 from Philadelphia to Seattle, returning Fri, May 29, priced at $245 found 6 days ago

Tue, Jun 16 - Thu, Jun 25

PHL

Philadelphia

SEA

Seattle

$260 Roundtrip, found 17 hours ago

$260

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Tue, Jun 16 from Philadelphia to Seattle, returning Thu, Jun 25, priced at $260 found 17 hours ago

Tue, May 19 - Fri, May 29

PHL

Philadelphia

SEA

Seattle

$265 Roundtrip, found 6 days ago

$265

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, May 19 from Philadelphia to Seattle, returning Fri, May 29, priced at $265 found 6 days ago

Sun, Jun 14 - Thu, Jun 25

PHL

Philadelphia

SEA

Seattle

$280 Roundtrip, found 17 hours ago

$280

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Sun, Jun 14 from Philadelphia to Seattle, returning Thu, Jun 25, priced at $280 found 17 hours ago

Mon, Jun 15 - Thu, Jun 25

PHL

Philadelphia

SEA

Seattle

$300 Roundtrip, found 17 hours ago

$300

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Mon, Jun 15 from Philadelphia to Seattle, returning Thu, Jun 25, priced at $300 found 17 hours ago

Tue, Jun 16 - Sat, Jun 20

PHL

Philadelphia

SEA

Seattle

$325 Roundtrip, found 17 hours ago

$325

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Tue, Jun 16 from Philadelphia to Seattle, returning Sat, Jun 20, priced at $325 found 17 hours ago

Fri, Jul 3 - Mon, Jul 20

PHL

Philadelphia

SEA

Seattle

$344 Roundtrip, found 1 day ago

$344

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Jul 3 from Philadelphia to Seattle, returning Mon, Jul 20, priced at $344 found 1 day ago

Wed, Jun 17 - Mon, Jun 22

PHL

Philadelphia

SEA

Seattle

$345 Roundtrip, found 17 hours ago

$345

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Wed, Jun 17 from Philadelphia to Seattle, returning Mon, Jun 22, priced at $345 found 17 hours ago