$140 Cheap Frontier Airlines flights Ontario Intl. Airport (ONT) to Detroit (DTW)

$140 Cheap Frontier Airlines flights Ontario Intl. Airport (ONT) to Detroit (DTW)

Prices were available within the past 7 days and start at $140 for one-way flights and $234 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jul 22 - Mon, Aug 24

ONT

Ontario

DTW

Detroit

$234 Roundtrip, found 5 days ago

$234

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jul 22 from Ontario to Detroit, returning Mon, Aug 24, priced at $234 found 5 days ago

Tue, Jun 2 - Wed, Jun 10

ONT

Ontario

DTW

Detroit

$240 Roundtrip, found 5 days ago

$240

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Jun 2 from Ontario to Detroit, returning Wed, Jun 10, priced at $240 found 5 days ago

Tue, Jun 2 - Fri, Jun 12

ONT

Ontario

DTW

Detroit

$260 Roundtrip, found 5 days ago

$260

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Jun 2 from Ontario to Detroit, returning Fri, Jun 12, priced at $260 found 5 days ago

Tue, Jul 21 - Mon, Aug 24

ONT

Ontario

DTW

Detroit

$274 Roundtrip, found 5 days ago

$274

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Jul 21 from Ontario to Detroit, returning Mon, Aug 24, priced at $274 found 5 days ago

Wed, Sep 30 - Tue, Oct 6

ONT

Ontario

DTW

Detroit

$280 Roundtrip, found 1 day ago

$280

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Sep 30 from Ontario to Detroit, returning Tue, Oct 6, priced at $280 found 1 day ago

Wed, Jul 8 - Mon, Jul 13

ONT

Ontario

DTW

Detroit

$290 Roundtrip, found 3 days ago

$290

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Jul 8 from Ontario to Detroit, returning Mon, Jul 13, priced at $290 found 3 days ago