Cheap Frontier Airlines flights New York (LGA) to Ontario (ONT)

Cheap Frontier Airlines flights New York (LGA) to Ontario (ONT)

Prices were available within the past 7 days and start at for one-way flights and $343 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Dec 31 - Mon, Jan 5

LGA

New York

ONT

Ontario

$343 Roundtrip, found 21 hours ago

$343

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Wed, Dec 31 from New York to Ontario, returning Mon, Jan 5, priced at $343 found 21 hours ago

Wed, Dec 31 - Fri, Jan 2

LGA

New York

ONT

Ontario

$452 Roundtrip, found 21 hours ago

$452

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Wed, Dec 31 from New York to Ontario, returning Fri, Jan 2, priced at $452 found 21 hours ago

Sat, Dec 27 - Mon, Jan 5

LGA

New York

ONT

Ontario

$682 Roundtrip, found 21 hours ago

$682

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Sat, Dec 27 from New York to Ontario, returning Mon, Jan 5, priced at $682 found 21 hours ago

Sat, Dec 27 - Wed, Dec 31

LGA

New York

ONT

Ontario

$731 Roundtrip, found 21 hours ago

$731

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Sat, Dec 27 from New York to Ontario, returning Wed, Dec 31, priced at $731 found 21 hours ago