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 $158 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Feb 10 - Sat, Feb 28

DTW

Detroit

ONT

Ontario

$158 Roundtrip, found 15 hours ago

$158

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Tue, Feb 10 from Detroit to Ontario, returning Sat, Feb 28, priced at $158 found 15 hours ago

Mon, Feb 2 - Tue, Feb 24

DTW

Detroit

ONT

Ontario

$169 Roundtrip, found 15 hours ago

$169

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Mon, Feb 2 from Detroit to Ontario, returning Tue, Feb 24, priced at $169 found 15 hours ago

Sat, Feb 21 - Wed, Mar 4

DTW

Detroit

ONT

Ontario

$174 Roundtrip, found 3 days ago

$174

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, Feb 21 from Detroit to Ontario, returning Wed, Mar 4, priced at $174 found 3 days ago

Sat, Apr 4 - Tue, Apr 7

DTW

Detroit

ONT

Ontario

$175 Roundtrip, found 2 days ago

$175

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Apr 4 from Detroit to Ontario, returning Tue, Apr 7, priced at $175 found 2 days ago

Tue, Feb 10 - Sat, Feb 14

DTW

Detroit

ONT

Ontario

$189 Roundtrip, found 15 hours ago

$189

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Tue, Feb 10 from Detroit to Ontario, returning Sat, Feb 14, priced at $189 found 15 hours ago

Tue, Mar 3 - Thu, Mar 5

DTW

Detroit

ONT

Ontario

$193 Roundtrip, found 2 days ago

$193

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Mar 3 from Detroit to Ontario, returning Thu, Mar 5, priced at $193 found 2 days ago

Tue, Mar 3 - Mon, Mar 16

DTW

Detroit

ONT

Ontario

$194 Roundtrip, found 3 days ago

$194

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Tue, Mar 3 from Detroit to Ontario, returning Mon, Mar 16, priced at $194 found 3 days ago

Sat, Apr 4 - Mon, Apr 6

DTW

Detroit

ONT

Ontario

$195 Roundtrip, found 2 days ago

$195

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Apr 4 from Detroit to Ontario, returning Mon, Apr 6, priced at $195 found 2 days ago

Sat, Apr 4 - Mon, Apr 13

DTW

Detroit

ONT

Ontario

$196 Roundtrip, found 3 days ago

$196

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, Apr 4 from Detroit to Ontario, returning Mon, Apr 13, priced at $196 found 3 days ago

Mon, Feb 2 - Fri, Feb 20

DTW

Detroit

ONT

Ontario

$200 Roundtrip, found 15 hours ago

$200

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Mon, Feb 2 from Detroit to Ontario, returning Fri, Feb 20, priced at $200 found 15 hours ago

Thu, Feb 19 - Thu, Mar 5

DTW

Detroit

ONT

Ontario

$209 Roundtrip, found 3 days ago

$209

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Feb 19 from Detroit to Ontario, returning Thu, Mar 5, priced at $209 found 3 days ago

Mon, Mar 2 - Mon, Mar 16

DTW

Detroit

ONT

Ontario

$210 Roundtrip, found 3 days ago

$210

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Mar 2 from Detroit to Ontario, returning Mon, Mar 16, priced at $210 found 3 days ago