$114 Cheap Frontier Airlines flights Baltimore (BWI) to St. Louis (STL)

$114 Cheap Frontier Airlines flights Baltimore (BWI) to St. Louis (STL)

Prices were available within the past 7 days and start at $114 for one-way flights and $218 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Aug 7 - Sat, Aug 9

BWI

Baltimore

STL

St. Louis

$218 Roundtrip, found 1 day ago

$218

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Aug 7 from Baltimore to St. Louis, returning Sat, Aug 9, priced at $218 found 1 day ago

Wed, Aug 6 - Sat, Aug 9

BWI

Baltimore

STL

St. Louis

$248 Roundtrip, found 1 day ago

$248

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Aug 6 from Baltimore to St. Louis, returning Sat, Aug 9, priced at $248 found 1 day ago

Wed, Aug 6 - Thu, Aug 7

BWI

Baltimore

STL

St. Louis

$258 Roundtrip, found 1 day ago

$258

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Aug 6 from Baltimore to St. Louis, returning Thu, Aug 7, priced at $258 found 1 day ago

Fri, Aug 8 - Sat, Aug 9

BWI

Baltimore

STL

St. Louis

$288 Roundtrip, found 1 day ago

$288

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Baltimore to St. Louis, returning Sat, Aug 9, priced at $288 found 1 day ago

Thu, Aug 7 - Sun, Aug 10

BWI

Baltimore

STL

St. Louis

$293 Roundtrip, found 1 day ago

$293

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Aug 7 from Baltimore to St. Louis, returning Sun, Aug 10, priced at $293 found 1 day ago

Thu, Aug 7 - Sun, Aug 10

BWI

Baltimore

STL

St. Louis

$298 Roundtrip, found 1 day ago

$298

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Aug 7 from Baltimore to St. Louis, returning Sun, Aug 10, priced at $298 found 1 day ago

Wed, Aug 6 - Sun, Aug 10

BWI

Baltimore

STL

St. Louis

$328 Roundtrip, found 1 day ago

$328

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Aug 6 from Baltimore to St. Louis, returning Sun, Aug 10, priced at $328 found 1 day ago