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

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

Prices were available within the past 7 days and start at for one-way flights and $205 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Apr 2 - Thu, Apr 9

ONT

Ontario

PHL

Philadelphia

$205 Roundtrip, found 4 days ago

$205

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Thu, Apr 2 from Ontario to Philadelphia, returning Thu, Apr 9, priced at $205 found 4 days ago

Thu, Apr 2 - Fri, Apr 10

ONT

Ontario

PHL

Philadelphia

$225 Roundtrip, found 4 days ago

$225

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Thu, Apr 2 from Ontario to Philadelphia, returning Fri, Apr 10, priced at $225 found 4 days ago

Thu, Apr 2 - Mon, Apr 6

ONT

Ontario

PHL

Philadelphia

$230 Roundtrip, found 4 days ago

$230

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Thu, Apr 2 from Ontario to Philadelphia, returning Mon, Apr 6, priced at $230 found 4 days ago

Fri, Apr 3 - Thu, Apr 9

ONT

Ontario

PHL

Philadelphia

$265 Roundtrip, found 4 days ago

$265

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, Apr 3 from Ontario to Philadelphia, returning Thu, Apr 9, priced at $265 found 4 days ago

Fri, Apr 3 - Fri, Apr 10

ONT

Ontario

PHL

Philadelphia

$285 Roundtrip, found 4 days ago

$285

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, Apr 3 from Ontario to Philadelphia, returning Fri, Apr 10, priced at $285 found 4 days ago

Thu, Apr 2 - Fri, Apr 3

ONT

Ontario

PHL

Philadelphia

$290 Roundtrip, found 4 days ago

$290

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Thu, Apr 2 from Ontario to Philadelphia, returning Fri, Apr 3, priced at $290 found 4 days ago

Thu, Apr 2 - Sun, Apr 12

ONT

Ontario

PHL

Philadelphia

$305 Roundtrip, found 4 days ago

$305

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Thu, Apr 2 from Ontario to Philadelphia, returning Sun, Apr 12, priced at $305 found 4 days ago

Fri, Apr 3 - Sun, Apr 5

ONT

Ontario

PHL

Philadelphia

$350 Roundtrip, found 4 days ago

$350

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, Apr 3 from Ontario to Philadelphia, returning Sun, Apr 5, priced at $350 found 4 days ago

Fri, Apr 3 - Sun, Apr 12

ONT

Ontario

PHL

Philadelphia

$365 Roundtrip, found 4 days ago

$365

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, Apr 3 from Ontario to Philadelphia, returning Sun, Apr 12, priced at $365 found 4 days ago