$166 Cheap Frontier Airlines flights Ontario Intl. Airport (ONT) to Baltimore (BWI)

$166 Cheap Frontier Airlines flights Ontario Intl. Airport (ONT) to Baltimore (BWI)

Prices were available within the past 7 days and start at $166 for one-way flights and $380 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jul 30 - Tue, Aug 11

ONT

Ontario

BWI

Baltimore

$380 Roundtrip, found 16 hours ago

$380

Roundtrip

found 16 hours ago

Select Frontier Airlines flight, departing Thu, Jul 30 from Ontario to Baltimore, returning Tue, Aug 11, priced at $380 found 16 hours ago

Thu, Jul 30 - Fri, Aug 7

ONT

Ontario

BWI

Baltimore

$400 Roundtrip, found 16 hours ago

$400

Roundtrip

found 16 hours ago

Select Frontier Airlines flight, departing Thu, Jul 30 from Ontario to Baltimore, returning Fri, Aug 7, priced at $400 found 16 hours ago

Wed, Jun 3 - Sat, Jun 6

ONT

Ontario

BWI

Baltimore

$420 Roundtrip, found 5 hours ago

$420

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Wed, Jun 3 from Ontario to Baltimore, returning Sat, Jun 6, priced at $420 found 5 hours ago

Thu, Jun 4 - Sat, Jun 6

ONT

Ontario

BWI

Baltimore

$440 Roundtrip, found 5 hours ago

$440

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Thu, Jun 4 from Ontario to Baltimore, returning Sat, Jun 6, priced at $440 found 5 hours ago

Wed, Jun 3 - Fri, Jun 12

ONT

Ontario

BWI

Baltimore

$450 Roundtrip, found 5 hours ago

$450

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Wed, Jun 3 from Ontario to Baltimore, returning Fri, Jun 12, priced at $450 found 5 hours ago

Wed, Jun 3 - Thu, Jun 11

ONT

Ontario

BWI

Baltimore

$470 Roundtrip, found 5 hours ago

$470

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Wed, Jun 3 from Ontario to Baltimore, returning Thu, Jun 11, priced at $470 found 5 hours ago