Cheap Frontier Airlines flights St. Louis (STL) to Boise (BOI)

Cheap Frontier Airlines flights St. Louis (STL) to Boise (BOI)

Prices were available within the past 7 days and start at for one-way flights and $217 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Dec 10 - Fri, Dec 12

STL

St. Louis

BOI

Boise

$217 Roundtrip, found 1 day ago

$217

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Dec 10 from St. Louis to Boise, returning Fri, Dec 12, priced at $217 found 1 day ago

Sat, Dec 6 - Thu, Dec 11

STL

St. Louis

BOI

Boise

$234 Roundtrip, found 1 day ago

$234

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Dec 6 from St. Louis to Boise, returning Thu, Dec 11, priced at $234 found 1 day ago

Sat, Dec 6 - Fri, Dec 12

STL

St. Louis

BOI

Boise

$238 Roundtrip, found 1 day ago

$238

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Dec 6 from St. Louis to Boise, returning Fri, Dec 12, priced at $238 found 1 day ago