$110 Cheap Frontier Airlines flights Chicago (ORD) to St. Louis (STL)

$110 Cheap Frontier Airlines flights Chicago (ORD) to St. Louis (STL)

Prices were available within the past 7 days and start at $110 for one-way flights and $208 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 18 - Sun, Sep 21

ORD

Chicago

STL

St. Louis

$208 Roundtrip, found 1 day ago

$208

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 18 from Chicago to St. Louis, returning Sun, Sep 21, priced at $208 found 1 day ago

Thu, Sep 18 - Sun, Sep 21

ORD

Chicago

STL

St. Louis

$224 Roundtrip, found 1 day ago

$224

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 18 from Chicago to St. Louis, returning Sun, Sep 21, priced at $224 found 1 day ago