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

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

Prices were available within the past 7 days and start at for one-way flights and $170 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jun 21 - Thu, Jun 26

STL

St. Louis

MDW

Chicago

$170 Roundtrip, found 23 hours ago

$170

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sat, Jun 21 from St. Louis to Chicago, returning Thu, Jun 26, priced at $170 found 23 hours ago

Sat, Jun 21 - Fri, Jun 27

STL

St. Louis

MDW

Chicago

$190 Roundtrip, found 23 hours ago

$190

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sat, Jun 21 from St. Louis to Chicago, returning Fri, Jun 27, priced at $190 found 23 hours ago

Thu, Jun 26 - Sun, Jun 29

STL

St. Louis

MDW

Chicago

$340 Roundtrip, found 1 day ago

$340

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Jun 26 from St. Louis to Chicago, returning Sun, Jun 29, priced at $340 found 1 day ago

Thu, Jun 26 - Fri, Jun 27

STL

St. Louis

MDW

Chicago

$360 Roundtrip, found 1 day ago

$360

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Jun 26 from St. Louis to Chicago, returning Fri, Jun 27, priced at $360 found 1 day ago

Thu, Jun 19 - Thu, Jun 26

STL

St. Louis

MDW

Chicago

$372 Roundtrip, found 23 hours ago

$372

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Thu, Jun 19 from St. Louis to Chicago, returning Thu, Jun 26, priced at $372 found 23 hours ago

Thu, Jun 19 - Fri, Jun 27

STL

St. Louis

MDW

Chicago

$392 Roundtrip, found 23 hours ago

$392

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Thu, Jun 19 from St. Louis to Chicago, returning Fri, Jun 27, priced at $392 found 23 hours ago

Sun, Jun 22 - Thu, Jun 26

STL

St. Louis

MDW

Chicago

$408 Roundtrip, found 23 hours ago

$408

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sun, Jun 22 from St. Louis to Chicago, returning Thu, Jun 26, priced at $408 found 23 hours ago

Thu, Jun 19 - Fri, Jun 20

STL

St. Louis

MDW

Chicago

$411 Roundtrip, found 23 hours ago

$411

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Thu, Jun 19 from St. Louis to Chicago, returning Fri, Jun 20, priced at $411 found 23 hours ago

Sun, Jun 22 - Fri, Jun 27

STL

St. Louis

MDW

Chicago

$428 Roundtrip, found 23 hours ago

$428

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sun, Jun 22 from St. Louis to Chicago, returning Fri, Jun 27, priced at $428 found 23 hours ago

Thu, Jun 19 - Sun, Jun 22

STL

St. Louis

MDW

Chicago

$610 Roundtrip, found 23 hours ago

$610

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Thu, Jun 19 from St. Louis to Chicago, returning Sun, Jun 22, priced at $610 found 23 hours ago