$145 Cheap Frontier Airlines flights Ontario Intl. Airport (ONT) to Boise (BOI)

$145 Cheap Frontier Airlines flights Ontario Intl. Airport (ONT) to Boise (BOI)

Prices were available within the past 7 days and start at $145 for one-way flights and $200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 14 - Tue, Jul 21

ONT

Ontario

BOI

Boise

$200 Roundtrip, found 5 days ago

$200

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Jul 14 from Ontario to Boise, returning Tue, Jul 21, priced at $200 found 5 days ago

Sun, Jul 12 - Tue, Jul 21

ONT

Ontario

BOI

Boise

$220 Roundtrip, found 5 days ago

$220

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, Jul 12 from Ontario to Boise, returning Tue, Jul 21, priced at $220 found 5 days ago

Sun, Jul 12 - Thu, Jul 16

ONT

Ontario

BOI

Boise

$240 Roundtrip, found 5 days ago

$240

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, Jul 12 from Ontario to Boise, returning Thu, Jul 16, priced at $240 found 5 days ago

Tue, Jun 16 - Tue, Jun 23

ONT

Ontario

BOI

Boise

$254 Roundtrip, found 12 hours ago

$254

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Tue, Jun 16 from Ontario to Boise, returning Tue, Jun 23, priced at $254 found 12 hours ago

Thu, Jun 18 - Tue, Jun 23

ONT

Ontario

BOI

Boise

$259 Roundtrip, found 12 hours ago

$259

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Thu, Jun 18 from Ontario to Boise, returning Tue, Jun 23, priced at $259 found 12 hours ago

Sun, Jun 21 - Tue, Jun 23

ONT

Ontario

BOI

Boise

$283 Roundtrip, found 12 hours ago

$283

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Sun, Jun 21 from Ontario to Boise, returning Tue, Jun 23, priced at $283 found 12 hours ago

Tue, Jun 16 - Thu, Jun 25

ONT

Ontario

BOI

Boise

$285 Roundtrip, found 12 hours ago

$285

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Tue, Jun 16 from Ontario to Boise, returning Thu, Jun 25, priced at $285 found 12 hours ago

Thu, Jun 18 - Thu, Jun 25

ONT

Ontario

BOI

Boise

$290 Roundtrip, found 12 hours ago

$290

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Thu, Jun 18 from Ontario to Boise, returning Thu, Jun 25, priced at $290 found 12 hours ago

Thu, Jun 18 - Tue, Jun 23

ONT

Ontario

BOI

Boise

$299 Roundtrip, found 12 hours ago

$299

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Thu, Jun 18 from Ontario to Boise, returning Tue, Jun 23, priced at $299 found 12 hours ago

Wed, Jun 17 - Tue, Jun 23

ONT

Ontario

BOI

Boise

$299 Roundtrip, found 12 hours ago

$299

Roundtrip

found 12 hours ago

Select Frontier Airlines flight, departing Wed, Jun 17 from Ontario to Boise, returning Tue, Jun 23, priced at $299 found 12 hours ago