$153 Cheap Frontier Airlines flights Ontario (ONT) to Chicago (MDW)

$153 Cheap Frontier Airlines flights Ontario (ONT) to Chicago (MDW)

Prices were available within the past 7 days and start at $153 for one-way flights and $325 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Oct 13 - Thu, Oct 16

ONT

Ontario

MDW

Chicago

$325 Roundtrip, found 1 day ago

$325

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Oct 13 from Ontario to Chicago, returning Thu, Oct 16, priced at $325 found 1 day ago

Sun, Aug 10 - Thu, Aug 14

ONT

Ontario

MDW

Chicago

$326 Roundtrip, found 6 hours ago

$326

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Sun, Aug 10 from Ontario to Chicago, returning Thu, Aug 14, priced at $326 found 6 hours ago