$83 Cheap Frontier Airlines flights Baltimore (BWI) to St. Louis (STL)

$83 Cheap Frontier Airlines flights Baltimore (BWI) to St. Louis (STL)

Prices were available within the past 7 days and start at $83 for one-way flights and $172 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Nov 21 - Mon, Nov 24

BWI

Baltimore

STL

St. Louis

$172 Roundtrip, found 3 days ago

$172

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Nov 21 from Baltimore to St. Louis, returning Mon, Nov 24, priced at $172 found 3 days ago

Fri, Nov 21 - Mon, Nov 24

BWI

Baltimore

STL

St. Louis

$269 Roundtrip, found 3 days ago

$269

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Nov 21 from Baltimore to St. Louis, returning Mon, Nov 24, priced at $269 found 3 days ago

Sun, Dec 21 - Tue, Jan 6

BWI

Baltimore

STL

St. Louis

$336 Roundtrip, found 16 hours ago

$336

Roundtrip

found 16 hours ago

Select Frontier Airlines flight, departing Sun, Dec 21 from Baltimore to St. Louis, returning Tue, Jan 6, priced at $336 found 16 hours ago

Sun, Dec 21 - Mon, Jan 5

BWI

Baltimore

STL

St. Louis

$400 Roundtrip, found 16 hours ago

$400

Roundtrip

found 16 hours ago

Select Frontier Airlines flight, departing Sun, Dec 21 from Baltimore to St. Louis, returning Mon, Jan 5, priced at $400 found 16 hours ago

Mon, Dec 22 - Mon, Jan 5

BWI

Baltimore

STL

St. Louis

$430 Roundtrip, found 16 hours ago

$430

Roundtrip

found 16 hours ago

Select Frontier Airlines flight, departing Mon, Dec 22 from Baltimore to St. Louis, returning Mon, Jan 5, priced at $430 found 16 hours ago