Cheap Frontier Airlines flights Ontario (ONT) to Knoxville (TYS)

Cheap Frontier Airlines flights Ontario (ONT) to Knoxville (TYS)

Prices were available within the past 7 days and start at for one-way flights and $148 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jan 23 - Mon, Jan 26

ONT

Ontario

TYS

Knoxville

$148 Roundtrip, found 19 hours ago

$148

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Fri, Jan 23 from Ontario to Knoxville, returning Mon, Jan 26, priced at $148 found 19 hours ago