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

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

Prices were available within the past 7 days and start at for one-way flights and $375 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 24 - Fri, Oct 31

ONT

Ontario

MKE

Milwaukee

$375 Roundtrip, found 1 day ago

$375

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Oct 24 from Ontario to Milwaukee, returning Fri, Oct 31, priced at $375 found 1 day ago

Mon, Oct 20 - Mon, Oct 27

ONT

Ontario

MKE

Milwaukee

$470 Roundtrip, found 1 day ago

$470

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Oct 20 from Ontario to Milwaukee, returning Mon, Oct 27, priced at $470 found 1 day ago

Mon, Oct 20 - Fri, Oct 24

ONT

Ontario

MKE

Milwaukee

$519 Roundtrip, found 1 day ago

$519

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Oct 20 from Ontario to Milwaukee, returning Fri, Oct 24, priced at $519 found 1 day ago