$95 Cheap Frontier Airlines flights Phoenix (PHX) to Ontario (ONT)

$95 Cheap Frontier Airlines flights Phoenix (PHX) to Ontario (ONT)

Prices were available within the past 7 days and start at $95 for one-way flights and $190 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, May 19 - Wed, May 21

PHX

Phoenix

ONT

Ontario

$190 Roundtrip, found 4 hours ago

$190

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Mon, May 19 from Phoenix to Ontario, returning Wed, May 21, priced at $190 found 4 hours ago

Tue, May 13 - Wed, May 21

PHX

Phoenix

ONT

Ontario

$191 Roundtrip, found 4 hours ago

$191

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Tue, May 13 from Phoenix to Ontario, returning Wed, May 21, priced at $191 found 4 hours ago

Thu, May 15 - Wed, May 21

PHX

Phoenix

ONT

Ontario

$200 Roundtrip, found 4 hours ago

$200

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Thu, May 15 from Phoenix to Ontario, returning Wed, May 21, priced at $200 found 4 hours ago

Mon, May 19 - Tue, May 20

PHX

Phoenix

ONT

Ontario

$210 Roundtrip, found 4 hours ago

$210

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Mon, May 19 from Phoenix to Ontario, returning Tue, May 20, priced at $210 found 4 hours ago

Wed, May 7 - Mon, May 12

PHX

Phoenix

ONT

Ontario

$211 Roundtrip, found 1 day ago

$211

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, May 7 from Phoenix to Ontario, returning Mon, May 12, priced at $211 found 1 day ago

Thu, May 15 - Tue, May 20

PHX

Phoenix

ONT

Ontario

$220 Roundtrip, found 4 hours ago

$220

Roundtrip

found 4 hours ago

Select Frontier Airlines flight, departing Thu, May 15 from Phoenix to Ontario, returning Tue, May 20, priced at $220 found 4 hours ago