Cheap Frontier Airlines flights Detroit (DTW) to Ontario (ONT)

Cheap Frontier Airlines flights Detroit (DTW) to Ontario (ONT)

Prices were available within the past 7 days and start at for one-way flights and $288 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 4 - Sun, Aug 17

DTW

Detroit

ONT

Ontario

$288 Roundtrip, found 1 day ago

$288

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Aug 4 from Detroit to Ontario, returning Sun, Aug 17, priced at $288 found 1 day ago

Tue, Aug 19 - Tue, Aug 26

DTW

Detroit

ONT

Ontario

$304 Roundtrip, found 5 days ago

$304

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Aug 19 from Detroit to Ontario, returning Tue, Aug 26, priced at $304 found 5 days ago

Mon, Aug 18 - Tue, Aug 26

DTW

Detroit

ONT

Ontario

$315 Roundtrip, found 5 days ago

$315

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Detroit to Ontario, returning Tue, Aug 26, priced at $315 found 5 days ago

Mon, Aug 18 - Fri, Aug 22

DTW

Detroit

ONT

Ontario

$326 Roundtrip, found 5 days ago

$326

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Detroit to Ontario, returning Fri, Aug 22, priced at $326 found 5 days ago