Cheap Frontier Airlines flights Miami (MIA) to Ontario (ONT)

Cheap Frontier Airlines flights Miami (MIA) to Ontario (ONT)

Prices were available within the past 7 days and start at for one-way flights and $326 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jul 19 - Wed, Jul 23

MIA

Miami

ONT

Ontario

$326 Roundtrip, found 7 hours ago

$326

Roundtrip

found 7 hours ago

Select Frontier Airlines flight, departing Sat, Jul 19 from Miami to Ontario, returning Wed, Jul 23, priced at $326 found 7 hours ago

Sat, Jul 19 - Thu, Jul 24

MIA

Miami

ONT

Ontario

$334 Roundtrip, found 9 hours ago

$334

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Sat, Jul 19 from Miami to Ontario, returning Thu, Jul 24, priced at $334 found 9 hours ago

Sat, Jul 19 - Sun, Jul 20

MIA

Miami

ONT

Ontario

$339 Roundtrip, found 7 hours ago

$339

Roundtrip

found 7 hours ago

Select Frontier Airlines flight, departing Sat, Jul 19 from Miami to Ontario, returning Sun, Jul 20, priced at $339 found 7 hours ago