$173 Cheap Frontier Airlines flights Seattle (SEA) to Washington (IAD)

$173 Cheap Frontier Airlines flights Seattle (SEA) to Washington (IAD)

Prices were available within the past 7 days and start at $173 for one-way flights and $322 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 4 - Mon, Aug 11

SEA

Seattle

IAD

Washington

$322 Roundtrip, found 2 days ago

$322

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Aug 4 from Seattle to Washington, returning Mon, Aug 11, priced at $322 found 2 days ago

Thu, Jul 31 - Thu, Aug 7

SEA

Seattle

IAD

Washington

$334 Roundtrip, just found

$334

Roundtrip

just found

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

Mon, Aug 4 - Fri, Aug 8

PAE

Seattle

IAD

Washington

$339 Roundtrip, found 2 days ago

$339

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Aug 4 from Seattle to Washington, returning Fri, Aug 8, priced at $339 found 2 days ago

Fri, Aug 1 - Fri, Aug 8

PAE

Seattle

IAD

Washington

$344 Roundtrip, found 2 days ago

$344

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Aug 1 from Seattle to Washington, returning Fri, Aug 8, priced at $344 found 2 days ago

Mon, Aug 4 - Mon, Aug 11

PAE

Seattle

IAD

Washington

$409 Roundtrip, found 2 days ago

$409

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Aug 4 from Seattle to Washington, returning Mon, Aug 11, priced at $409 found 2 days ago

Mon, Jul 28 - Mon, Aug 11

PAE

Seattle

IAD

Washington

$465 Roundtrip, found 3 days ago

$465

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Jul 28 from Seattle to Washington, returning Mon, Aug 11, priced at $465 found 3 days ago

Mon, Jul 28 - Fri, Aug 15

PAE

Seattle

IAD

Washington

$494 Roundtrip, found 3 days ago

$494

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Jul 28 from Seattle to Washington, returning Fri, Aug 15, priced at $494 found 3 days ago