$222 Cheap Frontier Airlines flights Detroit (DTW) to St. Louis (STL)

$222 Cheap Frontier Airlines flights Detroit (DTW) to St. Louis (STL)

Prices were available within the past 7 days and start at $222 for one-way flights and $345 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Mar 18 - Thu, Mar 26

DTW

Detroit

STL

St. Louis

$345 Roundtrip, found 15 hours ago

$345

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Wed, Mar 18 from Detroit to St. Louis, returning Thu, Mar 26, priced at $345 found 15 hours ago