$78 Cheap Frontier Airlines flights Baltimore (BWI) to Ontario (ONT)

$78 Cheap Frontier Airlines flights Baltimore (BWI) to Ontario (ONT)

Prices were available within the past 7 days and start at $78 for one-way flights and $156 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jan 12 - Sun, Jan 18

BWI

Baltimore

ONT

Ontario

$156 Roundtrip, found 11 hours ago

$156

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Mon, Jan 12 from Baltimore to Ontario, returning Sun, Jan 18, priced at $156 found 11 hours ago

Sun, Jan 18 - Thu, Jan 22

BWI

Baltimore

ONT

Ontario

$190 Roundtrip, found 11 hours ago

$190

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Sun, Jan 18 from Baltimore to Ontario, returning Thu, Jan 22, priced at $190 found 11 hours ago

Mon, Jan 12 - Thu, Jan 22

BWI

Baltimore

ONT

Ontario

$194 Roundtrip, found 11 hours ago

$194

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Mon, Jan 12 from Baltimore to Ontario, returning Thu, Jan 22, priced at $194 found 11 hours ago

Thu, Jan 15 - Thu, Jan 22

BWI

Baltimore

ONT

Ontario

$232 Roundtrip, found 11 hours ago

$232

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Thu, Jan 15 from Baltimore to Ontario, returning Thu, Jan 22, priced at $232 found 11 hours ago

Sun, Jan 4 - Sun, Jan 11

BWI

Baltimore

ONT

Ontario

$235 Roundtrip, found 4 hours ago

$235

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Sun, Jan 4 from Baltimore to Ontario, returning Sun, Jan 11, priced at $235 found 4 hours ago

Sun, Jan 4 - Thu, Jan 8

BWI

Baltimore

ONT

Ontario

$239 Roundtrip, found 4 hours ago

$239

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Sun, Jan 4 from Baltimore to Ontario, returning Thu, Jan 8, priced at $239 found 4 hours ago

Sat, Jan 3 - Sun, Jan 11

BWI

Baltimore

ONT

Ontario

$270 Roundtrip, found 4 hours ago

$270

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Sat, Jan 3 from Baltimore to Ontario, returning Sun, Jan 11, priced at $270 found 4 hours ago

Sat, Jan 3 - Thu, Jan 8

BWI

Baltimore

ONT

Ontario

$274 Roundtrip, found 4 hours ago

$274

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Sat, Jan 3 from Baltimore to Ontario, returning Thu, Jan 8, priced at $274 found 4 hours ago