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 $213 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Nov 22 - Mon, Nov 24

MKE

Milwaukee

ONT

Ontario

$213 Roundtrip, found 3 days ago

$213

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, Nov 22 from Milwaukee to Ontario, returning Mon, Nov 24, priced at $213 found 3 days ago

Sat, Nov 22 - Tue, Nov 25

MKE

Milwaukee

ONT

Ontario

$243 Roundtrip, found 1 day ago

$243

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Nov 22 from Milwaukee to Ontario, returning Tue, Nov 25, priced at $243 found 1 day ago

Sat, Nov 22 - Sat, Nov 29

MKE

Milwaukee

ONT

Ontario

$273 Roundtrip, found 3 days ago

$273

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, Nov 22 from Milwaukee to Ontario, returning Sat, Nov 29, priced at $273 found 3 days ago

Sat, Nov 22 - Mon, Nov 24

MKE

Milwaukee

ONT

Ontario

$302 Roundtrip, found 1 day ago

$302

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Nov 22 from Milwaukee to Ontario, returning Mon, Nov 24, priced at $302 found 1 day ago

Sat, Nov 22 - Sat, Nov 29

MKE

Milwaukee

ONT

Ontario

$332 Roundtrip, found 1 day ago

$332

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Nov 22 from Milwaukee to Ontario, returning Sat, Nov 29, priced at $332 found 1 day ago

Tue, Nov 25 - Sat, Nov 29

MKE

Milwaukee

ONT

Ontario

$392 Roundtrip, found 1 day ago

$392

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Nov 25 from Milwaukee to Ontario, returning Sat, Nov 29, priced at $392 found 1 day ago