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

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

Prices were available within the past 7 days and start at for one-way flights and $279 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Mar 6 - Mon, Mar 16

MKE

Milwaukee

ONT

Ontario

$279 Roundtrip, found 2 days ago

$279

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Mar 6 from Milwaukee to Ontario, returning Mon, Mar 16, priced at $279 found 2 days ago

Mon, Mar 9 - Fri, Mar 13

MKE

Milwaukee

ONT

Ontario

$289 Roundtrip, found 2 days ago

$289

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Mon, Mar 9 from Milwaukee to Ontario, returning Fri, Mar 13, priced at $289 found 2 days ago

Fri, Mar 13 - Mon, Mar 16

MKE

Milwaukee

ONT

Ontario

$290 Roundtrip, found 1 day ago

$290

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Mar 13 from Milwaukee to Ontario, returning Mon, Mar 16, priced at $290 found 1 day ago

Fri, Mar 6 - Fri, Mar 13

MKE

Milwaukee

ONT

Ontario

$339 Roundtrip, found 2 days ago

$339

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Mar 6 from Milwaukee to Ontario, returning Fri, Mar 13, priced at $339 found 2 days ago