$131 Cheap Frontier Airlines flights Milwaukee (MKE) to Ontario (ONT)

$131 Cheap Frontier Airlines flights Milwaukee (MKE) to Ontario (ONT)

Prices were available within the past 7 days and start at $131 for one-way flights and $233 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Nov 22 - Sat, Nov 29

MKE

Milwaukee

ONT

Ontario

$233 Roundtrip, found 1 day ago

$233

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Nov 22 from Milwaukee to Ontario, returning Sat, Nov 29, priced at $233 found 1 day ago

Mon, Nov 17 - Mon, Nov 24

MKE

Milwaukee

ONT

Ontario

$252 Roundtrip, found 5 days ago

$252

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Nov 17 from Milwaukee to Ontario, returning Mon, Nov 24, priced at $252 found 5 days ago

Mon, Nov 17 - Fri, Nov 28

MKE

Milwaukee

ONT

Ontario

$282 Roundtrip, found 1 day ago

$282

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Nov 17 from Milwaukee to Ontario, returning Fri, Nov 28, priced at $282 found 1 day ago

Sat, Nov 22 - Sat, Nov 29

MKE

Milwaukee

ONT

Ontario

$311 Roundtrip, found 1 day ago

$311

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Nov 22 from Milwaukee to Ontario, returning Sat, Nov 29, priced at $311 found 1 day ago

Mon, Nov 17 - Fri, Nov 21

MKE

Milwaukee

ONT

Ontario

$312 Roundtrip, found 1 day ago

$312

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Nov 17 from Milwaukee to Ontario, returning Fri, Nov 21, priced at $312 found 1 day ago

Mon, Nov 17 - Thu, Nov 27

MKE

Milwaukee

ONT

Ontario

$315 Roundtrip, found 4 days ago

$315

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Mon, Nov 17 from Milwaukee to Ontario, returning Thu, Nov 27, priced at $315 found 4 days ago