Cheap Frontier Airlines flights Cleveland (CLE) to Ontario Intl. Airport (ONT)

Cheap Frontier Airlines flights Cleveland (CLE) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days and start at for one-way flights and $220 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 3 - Tue, Jun 9

CLE

Cleveland

ONT

Ontario

$220 Roundtrip, found 6 days ago

$220

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Jun 3 from Cleveland to Ontario, returning Tue, Jun 9, priced at $220 found 6 days ago

Sat, Jun 6 - Tue, Jun 9

CLE

Cleveland

ONT

Ontario

$234 Roundtrip, found 6 days ago

$234

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Jun 6 from Cleveland to Ontario, returning Tue, Jun 9, priced at $234 found 6 days ago

Tue, Jun 9 - Wed, Jun 10

CLE

Cleveland

ONT

Ontario

$240 Roundtrip, found 6 days ago

$240

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Jun 9 from Cleveland to Ontario, returning Wed, Jun 10, priced at $240 found 6 days ago

Sat, Aug 15 - Tue, Sep 1

CLE

Cleveland

ONT

Ontario

$340 Roundtrip, found 13 hours ago

$340

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Sat, Aug 15 from Cleveland to Ontario, returning Tue, Sep 1, priced at $340 found 13 hours ago

Fri, Jun 19 - Tue, Jun 30

CLE

Cleveland

ONT

Ontario

$350 Roundtrip, found 5 days ago

$350

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Jun 19 from Cleveland to Ontario, returning Tue, Jun 30, priced at $350 found 5 days ago

Sat, Aug 15 - Sun, Aug 30

CLE

Cleveland

ONT

Ontario

$360 Roundtrip, found 13 hours ago

$360

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Sat, Aug 15 from Cleveland to Ontario, returning Sun, Aug 30, priced at $360 found 13 hours ago

Wed, Jun 17 - Wed, Jul 1

CLE

Cleveland

ONT

Ontario

$370 Roundtrip, found 5 days ago

$370

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jun 17 from Cleveland to Ontario, returning Wed, Jul 1, priced at $370 found 5 days ago

Thu, Jun 18 - Tue, Jun 30

CLE

Cleveland

ONT

Ontario

$405 Roundtrip, found 5 days ago

$405

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Jun 18 from Cleveland to Ontario, returning Tue, Jun 30, priced at $405 found 5 days ago

Sat, Jun 20 - Thu, Jun 25

CLE

Cleveland

ONT

Ontario

$460 Roundtrip, found 5 days ago

$460

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Jun 20 from Cleveland to Ontario, returning Thu, Jun 25, priced at $460 found 5 days ago