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

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

Prices were available within the past 7 days and start at for one-way flights and $347 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 17 - Thu, Aug 20

IAD

Washington

SEA

Seattle

$347 Roundtrip, found 1 day ago

$347

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Aug 17 from Washington to Seattle, returning Thu, Aug 20, priced at $347 found 1 day ago

Fri, Aug 14 - Thu, Aug 20

IAD

Washington

SEA

Seattle

$372 Roundtrip, found 1 day ago

$372

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Aug 14 from Washington to Seattle, returning Thu, Aug 20, priced at $372 found 1 day ago

Sun, Aug 16 - Thu, Aug 20

IAD

Washington

SEA

Seattle

$398 Roundtrip, found 1 day ago

$398

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Aug 16 from Washington to Seattle, returning Thu, Aug 20, priced at $398 found 1 day ago

Sun, Jun 28 - Fri, Jul 3

IAD

Washington

SEA

Seattle

$400 Roundtrip, found 1 day ago

$400

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Jun 28 from Washington to Seattle, returning Fri, Jul 3, priced at $400 found 1 day ago