$196 Cheap Frontier Airlines flights Philadelphia (PHL) to Ontario (ONT)

$196 Cheap Frontier Airlines flights Philadelphia (PHL) to Ontario (ONT)

Prices were available within the past 7 days and start at $196 for one-way flights and $361 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Feb 13 - Mon, Feb 16

PHL

Philadelphia

ONT

Ontario

$361 Roundtrip, found 1 day ago

$361

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Feb 13 from Philadelphia to Ontario, returning Mon, Feb 16, priced at $361 found 1 day ago

Fri, Feb 13 - Mon, Feb 16

PHL

Philadelphia

ONT

Ontario

$362 Roundtrip, found 1 day ago

$362

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Feb 13 from Philadelphia to Ontario, returning Mon, Feb 16, priced at $362 found 1 day ago

Fri, Feb 13 - Mon, Feb 16

PHL

Philadelphia

ONT

Ontario

$382 Roundtrip, found 1 day ago

$382

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Feb 13 from Philadelphia to Ontario, returning Mon, Feb 16, priced at $382 found 1 day ago

Fri, Mar 13 - Sun, Mar 15

PHL

Philadelphia

ONT

Ontario

$392 Roundtrip, found 22 hours ago

$392

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Fri, Mar 13 from Philadelphia to Ontario, returning Sun, Mar 15, priced at $392 found 22 hours ago

Fri, Feb 13 - Sun, Feb 22

PHL

Philadelphia

ONT

Ontario

$410 Roundtrip, found 1 day ago

$410

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Feb 13 from Philadelphia to Ontario, returning Sun, Feb 22, priced at $410 found 1 day ago