$95 Cheap Frontier Airlines flights Baltimore (BWI) to St. Louis (STL)

$95 Cheap Frontier Airlines flights Baltimore (BWI) to St. Louis (STL)

Prices were available within the past 7 days and start at $95 for one-way flights and $150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 2 - Mon, May 4

BWI

Baltimore

STL

St. Louis

$150 Roundtrip, found 21 hours ago

$150

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Sat, May 2 from Baltimore to St. Louis, returning Mon, May 4, priced at $150 found 21 hours ago

Sun, May 3 - Mon, May 4

BWI

Baltimore

STL

St. Louis

$170 Roundtrip, found 21 hours ago

$170

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Sun, May 3 from Baltimore to St. Louis, returning Mon, May 4, priced at $170 found 21 hours ago

Sun, May 3 - Sat, May 9

BWI

Baltimore

STL

St. Louis

$190 Roundtrip, found 21 hours ago

$190

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Sun, May 3 from Baltimore to St. Louis, returning Sat, May 9, priced at $190 found 21 hours ago

Sat, May 2 - Thu, May 7

BWI

Baltimore

STL

St. Louis

$215 Roundtrip, found 21 hours ago

$215

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Sat, May 2 from Baltimore to St. Louis, returning Thu, May 7, priced at $215 found 21 hours ago

Sun, May 3 - Thu, May 7

BWI

Baltimore

STL

St. Louis

$235 Roundtrip, found 21 hours ago

$235

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Sun, May 3 from Baltimore to St. Louis, returning Thu, May 7, priced at $235 found 21 hours ago

Tue, Jul 28 - Thu, Aug 13

BWI

Baltimore

STL

St. Louis

$240 Roundtrip, found 1 day ago

$240

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jul 28 from Baltimore to St. Louis, returning Thu, Aug 13, priced at $240 found 1 day ago

Sun, May 3 - Wed, May 6

BWI

Baltimore

STL

St. Louis

$243 Roundtrip, found 21 hours ago

$243

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Sun, May 3 from Baltimore to St. Louis, returning Wed, May 6, priced at $243 found 21 hours ago

Tue, Jun 30 - Sat, Jul 11

BWI

Baltimore

STL

St. Louis

$260 Roundtrip, found 1 day ago

$260

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 30 from Baltimore to St. Louis, returning Sat, Jul 11, priced at $260 found 1 day ago