$172 Cheap Frontier Airlines flights Washington (IAD) to Seattle (SEA)

$172 Cheap Frontier Airlines flights Washington (IAD) to Seattle (SEA)

Prices were available within the past 7 days and start at $172 for one-way flights and $334 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jul 31 - Thu, Aug 7

IAD

Washington

SEA

Seattle

$334 Roundtrip, found 5 days ago

$334

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Jul 31 from Washington to Seattle, returning Thu, Aug 7, priced at $334 found 5 days ago

Mon, Aug 4 - Mon, Aug 11

IAD

Washington

PAE

Seattle

$334 Roundtrip, found 5 days ago

$334

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Aug 4 from Washington to Seattle, returning Mon, Aug 11, priced at $334 found 5 days ago

Fri, Aug 1 - Mon, Aug 11

IAD

Washington

PAE

Seattle

$339 Roundtrip, found 5 days ago

$339

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Aug 1 from Washington to Seattle, returning Mon, Aug 11, priced at $339 found 5 days ago

Fri, Aug 1 - Fri, Aug 8

IAD

Washington

PAE

Seattle

$344 Roundtrip, found 5 days ago

$344

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Aug 1 from Washington to Seattle, returning Fri, Aug 8, priced at $344 found 5 days ago

Thu, Jul 31 - Sun, Aug 3

IAD

Washington

SEA

Seattle

$409 Roundtrip, found 15 hours ago

$409

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Thu, Jul 31 from Washington to Seattle, returning Sun, Aug 3, priced at $409 found 15 hours ago