Cheap Frontier Airlines flights St. Louis (STL) to Knoxville (TYS)

Cheap Frontier Airlines flights St. Louis (STL) to Knoxville (TYS)

Prices were available within the past 7 days and start at for one-way flights and $260 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Aug 2 - Mon, Aug 10

STL

St. Louis

TYS

Knoxville

$260 Roundtrip, found 17 hours ago

$260

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Sun, Aug 2 from St. Louis to Knoxville, returning Mon, Aug 10, priced at $260 found 17 hours ago

Sun, Aug 2 - Fri, Aug 7

STL

St. Louis

TYS

Knoxville

$280 Roundtrip, found 17 hours ago

$280

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Sun, Aug 2 from St. Louis to Knoxville, returning Fri, Aug 7, priced at $280 found 17 hours ago