$148 Cheap Frontier Airlines flights Washington (DCA) to St. Louis (STL)

$148 Cheap Frontier Airlines flights Washington (DCA) to St. Louis (STL)

Prices were available within the past 7 days and start at $148 for one-way flights and $274 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Aug 3 - Wed, Aug 6

DCA

Washington

STL

St. Louis

$274 Roundtrip, found 2 days ago

$274

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Aug 3 from Washington to St. Louis, returning Wed, Aug 6, priced at $274 found 2 days ago