$184 Cheap Frontier Airlines flights Baltimore (BWI) to Ontario Intl. Airport (ONT)

$184 Cheap Frontier Airlines flights Baltimore (BWI) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days and start at $184 for one-way flights and $250 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 4 - Sat, Aug 15

BWI

Baltimore

ONT

Ontario

$250 Roundtrip, found 5 hours ago

$250

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Tue, Aug 4 from Baltimore to Ontario, returning Sat, Aug 15, priced at $250 found 5 hours ago

Wed, Jul 15 - Wed, Aug 5

BWI

Baltimore

ONT

Ontario

$251 Roundtrip, found 5 hours ago

$251

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Wed, Jul 15 from Baltimore to Ontario, returning Wed, Aug 5, priced at $251 found 5 hours ago

Thu, Jul 23 - Sat, Jul 25

BWI

Baltimore

ONT

Ontario

$252 Roundtrip, found 2 hours ago

$252

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Thu, Jul 23 from Baltimore to Ontario, returning Sat, Jul 25, priced at $252 found 2 hours ago

Sun, Aug 2 - Sat, Aug 15

BWI

Baltimore

ONT

Ontario

$256 Roundtrip, found 5 hours ago

$256

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Sun, Aug 2 from Baltimore to Ontario, returning Sat, Aug 15, priced at $256 found 5 hours ago

Thu, Jul 23 - Fri, Jul 24

BWI

Baltimore

ONT

Ontario

$257 Roundtrip, found 2 hours ago

$257

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Thu, Jul 23 from Baltimore to Ontario, returning Fri, Jul 24, priced at $257 found 2 hours ago

Wed, Jul 22 - Sat, Aug 8

BWI

Baltimore

ONT

Ontario

$305 Roundtrip, found 5 hours ago

$305

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Wed, Jul 22 from Baltimore to Ontario, returning Sat, Aug 8, priced at $305 found 5 hours ago

Tue, Jul 21 - Sat, Jul 25

BWI

Baltimore

ONT

Ontario

$306 Roundtrip, found 2 hours ago

$306

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Tue, Jul 21 from Baltimore to Ontario, returning Sat, Jul 25, priced at $306 found 2 hours ago

Fri, Jun 26 - Thu, Jul 16

BWI

Baltimore

ONT

Ontario

$310 Roundtrip, found 5 hours ago

$310

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Fri, Jun 26 from Baltimore to Ontario, returning Thu, Jul 16, priced at $310 found 5 hours ago

Tue, Jul 21 - Fri, Jul 24

BWI

Baltimore

ONT

Ontario

$311 Roundtrip, found 2 hours ago

$311

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Tue, Jul 21 from Baltimore to Ontario, returning Fri, Jul 24, priced at $311 found 2 hours ago

Sat, Jul 18 - Sat, Aug 1

BWI

Baltimore

ONT

Ontario

$312 Roundtrip, found 5 hours ago

$312

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Sat, Jul 18 from Baltimore to Ontario, returning Sat, Aug 1, priced at $312 found 5 hours ago

Tue, Jul 14 - Sat, Jul 25

BWI

Baltimore

ONT

Ontario

$314 Roundtrip, found 5 hours ago

$314

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Tue, Jul 14 from Baltimore to Ontario, returning Sat, Jul 25, priced at $314 found 5 hours ago