$76 Cheap Frontier Airlines flights Detroit (DTW) to Ontario (ONT)

$76 Cheap Frontier Airlines flights Detroit (DTW) to Ontario (ONT)

Prices were available within the past 7 days and start at $76 for one-way flights and $148 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jan 12 - Thu, Jan 15

DTW

Detroit

ONT

Ontario

$148 Roundtrip, found 11 hours ago

$148

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Mon, Jan 12 from Detroit to Ontario, returning Thu, Jan 15, priced at $148 found 11 hours ago

Fri, Feb 6 - Mon, Feb 9

DTW

Detroit

ONT

Ontario

$211 Roundtrip, found 1 day ago

$211

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Feb 6 from Detroit to Ontario, returning Mon, Feb 9, priced at $211 found 1 day ago

Fri, Feb 6 - Sun, Feb 8

DTW

Detroit

ONT

Ontario

$219 Roundtrip, found 1 day ago

$219

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Feb 6 from Detroit to Ontario, returning Sun, Feb 8, priced at $219 found 1 day ago

Mon, Jan 12 - Thu, Jan 15

DTW

Detroit

ONT

Ontario

$348 Roundtrip, found 11 hours ago

$348

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Mon, Jan 12 from Detroit to Ontario, returning Thu, Jan 15, priced at $348 found 11 hours ago