$111 Cheap Frontier Airlines flights St. Louis (STL) to Chicago (ORD)

$111 Cheap Frontier Airlines flights St. Louis (STL) to Chicago (ORD)

Prices were available within the past 7 days and start at $111 for one-way flights and $172 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Dec 30 - Thu, Jan 15

STL

St. Louis

ORD

Chicago

$172 Roundtrip, found 10 hours ago

$172

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Tue, Dec 30 from St. Louis to Chicago, returning Thu, Jan 15, priced at $172 found 10 hours ago

Thu, Jan 1 - Thu, Jan 15

STL

St. Louis

ORD

Chicago

$173 Roundtrip, found 10 hours ago

$173

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Thu, Jan 1 from St. Louis to Chicago, returning Thu, Jan 15, priced at $173 found 10 hours ago

Sun, Dec 21 - Fri, Jan 2

STL

St. Louis

ORD

Chicago

$174 Roundtrip, found 10 hours ago

$174

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Sun, Dec 21 from St. Louis to Chicago, returning Fri, Jan 2, priced at $174 found 10 hours ago

Wed, Jan 21 - Thu, Feb 5

STL

St. Louis

ORD

Chicago

$193 Roundtrip, found 10 hours ago

$193

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Wed, Jan 21 from St. Louis to Chicago, returning Thu, Feb 5, priced at $193 found 10 hours ago

Mon, Dec 15 - Fri, Jan 2

STL

St. Louis

ORD

Chicago

$194 Roundtrip, found 10 hours ago

$194

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Mon, Dec 15 from St. Louis to Chicago, returning Fri, Jan 2, priced at $194 found 10 hours ago

Thu, Dec 25 - Thu, Jan 8

STL

St. Louis

ORD

Chicago

$197 Roundtrip, found 10 hours ago

$197

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Thu, Dec 25 from St. Louis to Chicago, returning Thu, Jan 8, priced at $197 found 10 hours ago

Thu, Dec 18 - Fri, Jan 2

STL

St. Louis

ORD

Chicago

$198 Roundtrip, found 10 hours ago

$198

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Thu, Dec 18 from St. Louis to Chicago, returning Fri, Jan 2, priced at $198 found 10 hours ago

Wed, Jan 21 - Fri, Feb 6

STL

St. Louis

ORD

Chicago

$207 Roundtrip, found 10 hours ago

$207

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Wed, Jan 21 from St. Louis to Chicago, returning Fri, Feb 6, priced at $207 found 10 hours ago