$111 Cheap Frontier Airlines flights St. Louis (STL) to Washington (IAD)

$111 Cheap Frontier Airlines flights St. Louis (STL) to Washington (IAD)

Prices were available within the past 7 days and start at $111 for one-way flights and $198 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Dec 25 - Thu, Jan 1

STL

St. Louis

IAD

Washington

$198 Roundtrip, found 1 day ago

$198

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Dec 25 from St. Louis to Washington, returning Thu, Jan 1, priced at $198 found 1 day ago

Tue, Dec 30 - Thu, Jan 1

STL

St. Louis

IAD

Washington

$224 Roundtrip, found 1 day ago

$224

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Dec 30 from St. Louis to Washington, returning Thu, Jan 1, priced at $224 found 1 day ago