$114 Cheap Frontier Airlines flights Philadelphia (PHL) to Seattle (SEA)

$114 Cheap Frontier Airlines flights Philadelphia (PHL) to Seattle (SEA)

Prices were available within the past 7 days and start at $114 for one-way flights and $218 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 9 - Sat, May 10

PHL

Philadelphia

SEA

Seattle

$218 Roundtrip, found 17 hours ago

$218

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Fri, May 9 from Philadelphia to Seattle, returning Sat, May 10, priced at $218 found 17 hours ago

Fri, May 9 - Sun, May 11

PHL

Philadelphia

SEA

Seattle

$228 Roundtrip, found 17 hours ago

$228

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Fri, May 9 from Philadelphia to Seattle, returning Sun, May 11, priced at $228 found 17 hours ago

Mon, May 5 - Sat, May 10

PHL

Philadelphia

SEA

Seattle

$238 Roundtrip, found 17 hours ago

$238

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Mon, May 5 from Philadelphia to Seattle, returning Sat, May 10, priced at $238 found 17 hours ago

Mon, May 5 - Fri, May 9

PHL

Philadelphia

SEA

Seattle

$248 Roundtrip, found 17 hours ago

$248

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Mon, May 5 from Philadelphia to Seattle, returning Fri, May 9, priced at $248 found 17 hours ago

Wed, Jun 11 - Sun, Jun 15

PHL

Philadelphia

SEA

Seattle

$283 Roundtrip, found 5 days ago

$283

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Philadelphia to Seattle, returning Sun, Jun 15, priced at $283 found 5 days ago

Mon, Jun 9 - Sat, Jun 14

PHL

Philadelphia

SEA

Seattle

$291 Roundtrip, found 5 days ago

$291

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Jun 9 from Philadelphia to Seattle, returning Sat, Jun 14, priced at $291 found 5 days ago

Wed, Jun 11 - Sat, Jun 14

PHL

Philadelphia

SEA

Seattle

$301 Roundtrip, found 5 days ago

$301

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Philadelphia to Seattle, returning Sat, Jun 14, priced at $301 found 5 days ago

Mon, Jun 9 - Fri, Jun 13

PHL

Philadelphia

PAE

Seattle

$311 Roundtrip, found 5 days ago

$311

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Jun 9 from Philadelphia to Seattle, returning Fri, Jun 13, priced at $311 found 5 days ago

Wed, Jun 11 - Thu, Jun 12

PHL

Philadelphia

SEA

Seattle

$321 Roundtrip, found 5 days ago

$321

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Philadelphia to Seattle, returning Thu, Jun 12, priced at $321 found 5 days ago

Sun, May 4 - Fri, May 9

PHL

Philadelphia

SEA

Seattle

$330 Roundtrip, found 17 hours ago

$330

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Sun, May 4 from Philadelphia to Seattle, returning Fri, May 9, priced at $330 found 17 hours ago

Sun, Jun 8 - Thu, Jun 12

PHL

Philadelphia

SEA

Seattle

$331 Roundtrip, found 5 days ago

$331

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, Jun 8 from Philadelphia to Seattle, returning Thu, Jun 12, priced at $331 found 5 days ago