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

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

Prices were available within the past 7 days and start at for one-way flights and $210 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 8 - Sat, Jul 12

STL

St. Louis

ORD

Chicago

$210 Roundtrip, found 2 days ago

$210

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Jul 8 from St. Louis to Chicago, returning Sat, Jul 12, priced at $210 found 2 days ago

Thu, Jul 10 - Sat, Jul 12

STL

St. Louis

ORD

Chicago

$220 Roundtrip, found 2 days ago

$220

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Jul 10 from St. Louis to Chicago, returning Sat, Jul 12, priced at $220 found 2 days ago

Sat, Jul 5 - Mon, Jul 14

STL

St. Louis

ORD

Chicago

$230 Roundtrip, found 2 days ago

$230

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Jul 5 from St. Louis to Chicago, returning Mon, Jul 14, priced at $230 found 2 days ago

Sun, Jul 6 - Sat, Jul 12

STL

St. Louis

ORD

Chicago

$260 Roundtrip, found 2 days ago

$260

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Jul 6 from St. Louis to Chicago, returning Sat, Jul 12, priced at $260 found 2 days ago