$105 Cheap Frontier Airlines flights Baltimore (BWI) to Ontario (ONT)

$105 Cheap Frontier Airlines flights Baltimore (BWI) to Ontario (ONT)

Prices were available within the past 7 days and start at $105 for one-way flights and $210 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jul 5 - Mon, Jul 14

BWI

Baltimore

ONT

Ontario

$210 Roundtrip, found 13 hours ago

$210

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Sat, Jul 5 from Baltimore to Ontario, returning Mon, Jul 14, priced at $210 found 13 hours ago

Fri, Jun 20 - Wed, Jul 2

BWI

Baltimore

ONT

Ontario

$279 Roundtrip, found 16 hours ago

$279

Roundtrip

found 16 hours ago

Select Frontier Airlines flight, departing Fri, Jun 20 from Baltimore to Ontario, returning Wed, Jul 2, priced at $279 found 16 hours ago

Sat, Jul 5 - Wed, Jul 23

BWI

Baltimore

ONT

Ontario

$285 Roundtrip, found 13 hours ago

$285

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Sat, Jul 5 from Baltimore to Ontario, returning Wed, Jul 23, priced at $285 found 13 hours ago

Sat, Jul 5 - Sat, Jul 19

BWI

Baltimore

ONT

Ontario

$290 Roundtrip, found 13 hours ago

$290

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Sat, Jul 5 from Baltimore to Ontario, returning Sat, Jul 19, priced at $290 found 13 hours ago

Sat, Jul 5 - Sun, Jul 20

BWI

Baltimore

ONT

Ontario

$295 Roundtrip, found 13 hours ago

$295

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Sat, Jul 5 from Baltimore to Ontario, returning Sun, Jul 20, priced at $295 found 13 hours ago

Sat, Jul 5 - Thu, Jul 17

BWI

Baltimore

ONT

Ontario

$310 Roundtrip, found 13 hours ago

$310

Roundtrip

found 13 hours ago

Select Frontier Airlines flight, departing Sat, Jul 5 from Baltimore to Ontario, returning Thu, Jul 17, priced at $310 found 13 hours ago