$130 Cheap Frontier Airlines flights Philadelphia (PHL) to Ontario (ONT)

$130 Cheap Frontier Airlines flights Philadelphia (PHL) to Ontario (ONT)

Prices were available within the past 7 days and start at $130 for one-way flights and $170 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Apr 28 - Fri, May 8

PHL

Philadelphia

ONT

Ontario

$170 Roundtrip, found 1 day ago

$170

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Apr 28 from Philadelphia to Ontario, returning Fri, May 8, priced at $170 found 1 day ago

Mon, Apr 20 - Fri, Apr 24

PHL

Philadelphia

ONT

Ontario

$190 Roundtrip, found 1 day ago

$190

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Apr 20 from Philadelphia to Ontario, returning Fri, Apr 24, priced at $190 found 1 day ago

Fri, May 1 - Fri, May 8

PHL

Philadelphia

ONT

Ontario

$195 Roundtrip, found 1 day ago

$195

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, May 1 from Philadelphia to Ontario, returning Fri, May 8, priced at $195 found 1 day ago

Wed, Apr 29 - Thu, Apr 30

PHL

Philadelphia

ONT

Ontario

$215 Roundtrip, found 1 day ago

$215

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Apr 29 from Philadelphia to Ontario, returning Thu, Apr 30, priced at $215 found 1 day ago

Tue, Jun 2 - Tue, Jun 9

PHL

Philadelphia

ONT

Ontario

$220 Roundtrip, found 3 hours ago

$220

Roundtrip

found 3 hours ago

Select Frontier Airlines flight, departing Tue, Jun 2 from Philadelphia to Ontario, returning Tue, Jun 9, priced at $220 found 3 hours ago

Mon, Jun 1 - Tue, Jun 9

PHL

Philadelphia

ONT

Ontario

$225 Roundtrip, found 3 hours ago

$225

Roundtrip

found 3 hours ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Philadelphia to Ontario, returning Tue, Jun 9, priced at $225 found 3 hours ago

Mon, Apr 20 - Thu, Apr 23

PHL

Philadelphia

ONT

Ontario

$235 Roundtrip, found 1 day ago

$235

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Apr 20 from Philadelphia to Ontario, returning Thu, Apr 23, priced at $235 found 1 day ago

Tue, Jun 2 - Sun, Jun 7

PHL

Philadelphia

ONT

Ontario

$240 Roundtrip, found 3 hours ago

$240

Roundtrip

found 3 hours ago

Select Frontier Airlines flight, departing Tue, Jun 2 from Philadelphia to Ontario, returning Sun, Jun 7, priced at $240 found 3 hours ago

Mon, Jun 1 - Sun, Jun 7

PHL

Philadelphia

ONT

Ontario

$245 Roundtrip, found 3 hours ago

$245

Roundtrip

found 3 hours ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Philadelphia to Ontario, returning Sun, Jun 7, priced at $245 found 3 hours ago

Sat, May 30 - Sun, Jun 7

PHL

Philadelphia

ONT

Ontario

$260 Roundtrip, found 3 hours ago

$260

Roundtrip

found 3 hours ago

Select Frontier Airlines flight, departing Sat, May 30 from Philadelphia to Ontario, returning Sun, Jun 7, priced at $260 found 3 hours ago

Thu, Apr 9 - Tue, Apr 14

PHL

Philadelphia

ONT

Ontario

$370 Roundtrip, found 19 hours ago

$370

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Thu, Apr 9 from Philadelphia to Ontario, returning Tue, Apr 14, priced at $370 found 19 hours ago