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 $315 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Feb 21 - Wed, Feb 25

DTW

Detroit

ONT

Ontario

$315 Roundtrip, found 1 day ago

$315

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Feb 21 from Detroit to Ontario, returning Wed, Feb 25, priced at $315 found 1 day ago

Sat, Feb 21 - Thu, Feb 26

DTW

Detroit

ONT

Ontario

$326 Roundtrip, found 1 day ago

$326

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Feb 21 from Detroit to Ontario, returning Thu, Feb 26, priced at $326 found 1 day ago

Thu, Feb 19 - Wed, Feb 25

DTW

Detroit

ONT

Ontario

$355 Roundtrip, found 1 day ago

$355

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Feb 19 from Detroit to Ontario, returning Wed, Feb 25, priced at $355 found 1 day ago

Fri, Feb 20 - Wed, Feb 25

DTW

Detroit

ONT

Ontario

$359 Roundtrip, found 1 day ago

$359

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Feb 20 from Detroit to Ontario, returning Wed, Feb 25, priced at $359 found 1 day ago

Thu, Feb 19 - Thu, Feb 26

DTW

Detroit

ONT

Ontario

$366 Roundtrip, found 1 day ago

$366

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Feb 19 from Detroit to Ontario, returning Thu, Feb 26, priced at $366 found 1 day ago

Fri, Feb 20 - Thu, Feb 26

DTW

Detroit

ONT

Ontario

$370 Roundtrip, found 1 day ago

$370

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Feb 20 from Detroit to Ontario, returning Thu, Feb 26, priced at $370 found 1 day ago

Thu, Feb 19 - Sat, Feb 28

DTW

Detroit

ONT

Ontario

$406 Roundtrip, found 1 day ago

$406

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Feb 19 from Detroit to Ontario, returning Sat, Feb 28, priced at $406 found 1 day ago

Thu, Feb 19 - Sun, Feb 22

DTW

Detroit

ONT

Ontario

$410 Roundtrip, found 1 day ago

$410

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Feb 19 from Detroit to Ontario, returning Sun, Feb 22, priced at $410 found 1 day ago