$351 Cheap Frontier Airlines flights St. Louis (STL) to Baltimore (BWI)

$351 Cheap Frontier Airlines flights St. Louis (STL) to Baltimore (BWI)

Prices were available within the past 7 days and start at $351 for one-way flights and $232 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Apr 8 - Sat, Apr 11

STL

St. Louis

BWI

Baltimore

$232 Roundtrip, found 2 days ago

$232

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Apr 8 from St. Louis to Baltimore, returning Sat, Apr 11, priced at $232 found 2 days ago

Wed, Apr 8 - Tue, Apr 14

STL

St. Louis

BWI

Baltimore

$266 Roundtrip, found 2 days ago

$266

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Apr 8 from St. Louis to Baltimore, returning Tue, Apr 14, priced at $266 found 2 days ago

Thu, Apr 9 - Sat, Apr 18

STL

St. Louis

BWI

Baltimore

$270 Roundtrip, found 15 hours ago

$270

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Thu, Apr 9 from St. Louis to Baltimore, returning Sat, Apr 18, priced at $270 found 15 hours ago

Tue, Apr 7 - Sat, Apr 11

STL

St. Louis

BWI

Baltimore

$291 Roundtrip, found 2 days ago

$291

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Apr 7 from St. Louis to Baltimore, returning Sat, Apr 11, priced at $291 found 2 days ago

Sat, Apr 4 - Sat, Apr 11

STL

St. Louis

BWI

Baltimore

$301 Roundtrip, found 2 days ago

$301

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Apr 4 from St. Louis to Baltimore, returning Sat, Apr 11, priced at $301 found 2 days ago

Thu, Apr 9 - Sun, Apr 19

STL

St. Louis

BWI

Baltimore

$305 Roundtrip, found 15 hours ago

$305

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Thu, Apr 9 from St. Louis to Baltimore, returning Sun, Apr 19, priced at $305 found 15 hours ago