$286 Cheap Frontier Airlines flights Baltimore (BWI) to Ontario (ONT)

$286 Cheap Frontier Airlines flights Baltimore (BWI) to Ontario (ONT)

Prices were available within the past 7 days and start at $286 for one-way flights and $228 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 9 - Fri, May 16

BWI

Baltimore

ONT

Ontario

$228 Roundtrip, found 1 day ago

$228

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, May 9 from Baltimore to Ontario, returning Fri, May 16, priced at $228 found 1 day ago

Mon, May 5 - Mon, May 12

BWI

Baltimore

ONT

Ontario

$248 Roundtrip, found 1 day ago

$248

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, May 5 from Baltimore to Ontario, returning Mon, May 12, priced at $248 found 1 day ago

Mon, May 5 - Thu, May 15

BWI

Baltimore

ONT

Ontario

$268 Roundtrip, found 1 day ago

$268

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, May 5 from Baltimore to Ontario, returning Thu, May 15, priced at $268 found 1 day ago

Fri, May 9 - Sun, May 18

BWI

Baltimore

ONT

Ontario

$300 Roundtrip, found 1 day ago

$300

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, May 9 from Baltimore to Ontario, returning Sun, May 18, priced at $300 found 1 day ago

Mon, May 5 - Sun, May 18

BWI

Baltimore

ONT

Ontario

$320 Roundtrip, found 1 day ago

$320

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, May 5 from Baltimore to Ontario, returning Sun, May 18, priced at $320 found 1 day ago

Fri, Jul 18 - Fri, Jul 25

BWI

Baltimore

ONT

Ontario

$412 Roundtrip, found 5 days ago

$412

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Jul 18 from Baltimore to Ontario, returning Fri, Jul 25, priced at $412 found 5 days ago

Wed, Jul 16 - Sun, Jul 27

BWI

Baltimore

ONT

Ontario

$465 Roundtrip, found 5 days ago

$465

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jul 16 from Baltimore to Ontario, returning Sun, Jul 27, priced at $465 found 5 days ago

Wed, Jul 16 - Sun, Jul 27

BWI

Baltimore

ONT

Ontario

$484 Roundtrip, found 5 days ago

$484

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jul 16 from Baltimore to Ontario, returning Sun, Jul 27, priced at $484 found 5 days ago