$116 Cheap Frontier Airlines flights Detroit (DTW) to Ontario Intl. Airport (ONT)

$116 Cheap Frontier Airlines flights Detroit (DTW) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days and start at $116 for one-way flights and $254 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jun 1 - Mon, Jun 8

DTW

Detroit

ONT

Ontario

$254 Roundtrip, found 5 days ago

$254

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Detroit to Ontario, returning Mon, Jun 8, priced at $254 found 5 days ago

Tue, Jul 21 - Wed, Aug 12

DTW

Detroit

ONT

Ontario

$280 Roundtrip, found 4 days ago

$280

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Tue, Jul 21 from Detroit to Ontario, returning Wed, Aug 12, priced at $280 found 4 days ago

Sat, Jun 27 - Tue, Jul 14

DTW

Detroit

ONT

Ontario

$290 Roundtrip, found 3 days ago

$290

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, Jun 27 from Detroit to Ontario, returning Tue, Jul 14, priced at $290 found 3 days ago

Tue, Jun 16 - Sat, Jul 4

DTW

Detroit

ONT

Ontario

$294 Roundtrip, found 21 hours ago

$294

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Tue, Jun 16 from Detroit to Ontario, returning Sat, Jul 4, priced at $294 found 21 hours ago

Tue, Jun 16 - Fri, Jul 3

DTW

Detroit

ONT

Ontario

$300 Roundtrip, found 21 hours ago

$300

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Tue, Jun 16 from Detroit to Ontario, returning Fri, Jul 3, priced at $300 found 21 hours ago

Wed, Jun 17 - Wed, Jul 8

DTW

Detroit

ONT

Ontario

$310 Roundtrip, found 3 days ago

$310

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Jun 17 from Detroit to Ontario, returning Wed, Jul 8, priced at $310 found 3 days ago