$130 Cheap Frontier Airlines flights St. Louis (STL) to Denver (DEN)

$130 Cheap Frontier Airlines flights St. Louis (STL) to Denver (DEN)

Prices were available within the past 7 days and start at $130 for one-way flights and $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Dec 23 - Mon, Dec 29

STL

St. Louis

DEN

Denver

$244 Roundtrip, found 1 day ago

$244

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Dec 23 from St. Louis to Denver, returning Mon, Dec 29, priced at $244 found 1 day ago

Tue, Dec 23 - Thu, Jan 1

STL

St. Louis

DEN

Denver

$248 Roundtrip, found 1 day ago

$248

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Dec 23 from St. Louis to Denver, returning Thu, Jan 1, priced at $248 found 1 day ago

Tue, Dec 23 - Wed, Dec 31

STL

St. Louis

DEN

Denver

$251 Roundtrip, found 1 day ago

$251

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Dec 23 from St. Louis to Denver, returning Wed, Dec 31, priced at $251 found 1 day ago

Tue, Dec 23 - Fri, Jan 2

STL

St. Louis

DEN

Denver

$261 Roundtrip, found 1 day ago

$261

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Dec 23 from St. Louis to Denver, returning Fri, Jan 2, priced at $261 found 1 day ago

Mon, Dec 29 - Thu, Jan 1

STL

St. Louis

DEN

Denver

$277 Roundtrip, found 1 day ago

$277

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Dec 29 from St. Louis to Denver, returning Thu, Jan 1, priced at $277 found 1 day ago

Mon, Dec 29 - Wed, Dec 31

STL

St. Louis

DEN

Denver

$280 Roundtrip, found 1 day ago

$280

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Dec 29 from St. Louis to Denver, returning Wed, Dec 31, priced at $280 found 1 day ago

Tue, Dec 23 - Sat, Dec 27

STL

St. Louis

DEN

Denver

$281 Roundtrip, found 1 day ago

$281

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Dec 23 from St. Louis to Denver, returning Sat, Dec 27, priced at $281 found 1 day ago

Mon, Dec 29 - Fri, Jan 2

STL

St. Louis

DEN

Denver

$290 Roundtrip, found 1 day ago

$290

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Dec 29 from St. Louis to Denver, returning Fri, Jan 2, priced at $290 found 1 day ago