$141 Cheap Frontier Airlines flights Boise (BOI) to Ontario (ONT)

$141 Cheap Frontier Airlines flights Boise (BOI) to Ontario (ONT)

Prices were available within the past 7 days and start at $141 for one-way flights and $210 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, May 25 - Tue, May 27

BOI

Boise

ONT

Ontario

$210 Roundtrip, found 1 day ago

$210

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, May 25 from Boise to Ontario, returning Tue, May 27, priced at $210 found 1 day ago

Tue, May 20 - Tue, May 27

BOI

Boise

ONT

Ontario

$211 Roundtrip, found 1 day ago

$211

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, May 20 from Boise to Ontario, returning Tue, May 27, priced at $211 found 1 day ago

Tue, May 20 - Sat, May 31

BOI

Boise

ONT

Ontario

$240 Roundtrip, found 1 day ago

$240

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, May 20 from Boise to Ontario, returning Sat, May 31, priced at $240 found 1 day ago

Tue, May 20 - Mon, May 26

BOI

Boise

ONT

Ontario

$241 Roundtrip, found 1 day ago

$241

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, May 20 from Boise to Ontario, returning Mon, May 26, priced at $241 found 1 day ago

Thu, May 22 - Sat, May 31

BOI

Boise

ONT

Ontario

$271 Roundtrip, found 1 day ago

$271

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, May 22 from Boise to Ontario, returning Sat, May 31, priced at $271 found 1 day ago