$154 Cheap Frontier Airlines flights Seattle (SEA) to Philadelphia (PHL)

$154 Cheap Frontier Airlines flights Seattle (SEA) to Philadelphia (PHL)

Prices were available within the past 7 days and start at $154 for one-way flights and $268 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 15 - Sat, Oct 18

SEA

Seattle

PHL

Philadelphia

$268 Roundtrip, found 1 day ago

$268

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Oct 15 from Seattle to Philadelphia, returning Sat, Oct 18, priced at $268 found 1 day ago

Wed, Oct 15 - Fri, Oct 17

SEA

Seattle

PHL

Philadelphia

$288 Roundtrip, found 1 day ago

$288

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Oct 15 from Seattle to Philadelphia, returning Fri, Oct 17, priced at $288 found 1 day ago

Fri, Aug 8 - Tue, Aug 12

SEA

Seattle

PHL

Philadelphia

$388 Roundtrip, found 2 days ago

$388

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Seattle to Philadelphia, returning Tue, Aug 12, priced at $388 found 2 days ago

Fri, Aug 8 - Sun, Aug 10

SEA

Seattle

PHL

Philadelphia

$448 Roundtrip, found 2 days ago

$448

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Seattle to Philadelphia, returning Sun, Aug 10, priced at $448 found 2 days ago