$81 Cheap Frontier Airlines flights Phoenix (PHX) to Ontario (ONT)

$81 Cheap Frontier Airlines flights Phoenix (PHX) to Ontario (ONT)

Prices were available within the past 7 days and start at $81 for one-way flights and $150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Apr 28 - Tue, May 5

PHX

Phoenix

ONT

Ontario

$150 Roundtrip, found 23 hours ago

$150

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Tue, Apr 28 from Phoenix to Ontario, returning Tue, May 5, priced at $150 found 23 hours ago

Tue, Apr 28 - Mon, May 11

PHX

Phoenix

ONT

Ontario

$170 Roundtrip, found 23 hours ago

$170

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Tue, Apr 28 from Phoenix to Ontario, returning Mon, May 11, priced at $170 found 23 hours ago

Fri, May 1 - Tue, May 5

PHX

Phoenix

ONT

Ontario

$191 Roundtrip, found 23 hours ago

$191

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Fri, May 1 from Phoenix to Ontario, returning Tue, May 5, priced at $191 found 23 hours ago

Fri, May 1 - Mon, May 11

PHX

Phoenix

ONT

Ontario

$211 Roundtrip, found 23 hours ago

$211

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Fri, May 1 from Phoenix to Ontario, returning Mon, May 11, priced at $211 found 23 hours ago

Fri, May 1 - Sun, May 3

PHX

Phoenix

ONT

Ontario

$256 Roundtrip, found 23 hours ago

$256

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Fri, May 1 from Phoenix to Ontario, returning Sun, May 3, priced at $256 found 23 hours ago

Fri, May 1 - Sun, May 3

PHX

Phoenix

ONT

Ontario

$302 Roundtrip, found 23 hours ago

$302

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Fri, May 1 from Phoenix to Ontario, returning Sun, May 3, priced at $302 found 23 hours ago