$163 Cheap Frontier Airlines flights Ontario (ONT) to Chicago (ORD)

$163 Cheap Frontier Airlines flights Ontario (ONT) to Chicago (ORD)

Prices were available within the past 7 days and start at $163 for one-way flights and $304 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 14 - Wed, Oct 15

ONT

Ontario

ORD

Chicago

$304 Roundtrip, found 1 day ago

$304

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Oct 14 from Ontario to Chicago, returning Wed, Oct 15, priced at $304 found 1 day ago

Sat, Oct 11 - Wed, Oct 15

ONT

Ontario

ORD

Chicago

$315 Roundtrip, found 1 day ago

$315

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Oct 11 from Ontario to Chicago, returning Wed, Oct 15, priced at $315 found 1 day ago