$125 Cheap Frontier Airlines flights St. Louis (STL) to Washington (IAD)

$125 Cheap Frontier Airlines flights St. Louis (STL) to Washington (IAD)

Prices were available within the past 7 days and start at $125 for one-way flights and $228 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jul 4 - Tue, Jul 14

STL

St. Louis

IAD

Washington

$228 Roundtrip, found 2 days ago

$228

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Jul 4 from St. Louis to Washington, returning Tue, Jul 14, priced at $228 found 2 days ago

Sat, Jul 4 - Thu, Jul 16

STL

St. Louis

IAD

Washington

$233 Roundtrip, found 2 days ago

$233

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Jul 4 from St. Louis to Washington, returning Thu, Jul 16, priced at $233 found 2 days ago

Mon, Jul 6 - Thu, Jul 23

STL

St. Louis

IAD

Washington

$238 Roundtrip, found 2 days ago

$238

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Jul 6 from St. Louis to Washington, returning Thu, Jul 23, priced at $238 found 2 days ago

Sat, Jul 18 - Thu, Jul 30

STL

St. Louis

IAD

Washington

$248 Roundtrip, found 6 days ago

$248

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Jul 18 from St. Louis to Washington, returning Thu, Jul 30, priced at $248 found 6 days ago

Sat, Jul 4 - Sat, Jul 18

STL

St. Louis

IAD

Washington

$254 Roundtrip, found 2 days ago

$254

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Jul 4 from St. Louis to Washington, returning Sat, Jul 18, priced at $254 found 2 days ago

Mon, Jun 15 - Tue, Jun 30

STL

St. Louis

IAD

Washington

$259 Roundtrip, found 2 days ago

$259

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Jun 15 from St. Louis to Washington, returning Tue, Jun 30, priced at $259 found 2 days ago