$106 Cheap Frontier Airlines flights Phoenix (PHX) to Ontario (ONT)

$106 Cheap Frontier Airlines flights Phoenix (PHX) to Ontario (ONT)

Prices were available within the past 7 days and start at $106 for one-way flights and $174 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Mar 3 - Tue, Mar 10

PHX

Phoenix

ONT

Ontario

$174 Roundtrip, found 11 hours ago

$174

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Tue, Mar 3 from Phoenix to Ontario, returning Tue, Mar 10, priced at $174 found 11 hours ago

Sat, Mar 7 - Tue, Mar 10

PHX

Phoenix

ONT

Ontario

$202 Roundtrip, found 11 hours ago

$202

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Sat, Mar 7 from Phoenix to Ontario, returning Tue, Mar 10, priced at $202 found 11 hours ago

Tue, Mar 3 - Sat, Mar 7

PHX

Phoenix

ONT

Ontario

$204 Roundtrip, found 11 hours ago

$204

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Tue, Mar 3 from Phoenix to Ontario, returning Sat, Mar 7, priced at $204 found 11 hours ago

Thu, Mar 5 - Tue, Mar 10

PHX

Phoenix

ONT

Ontario

$222 Roundtrip, found 11 hours ago

$222

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Thu, Mar 5 from Phoenix to Ontario, returning Tue, Mar 10, priced at $222 found 11 hours ago

Fri, Mar 6 - Tue, Mar 10

PHX

Phoenix

ONT

Ontario

$222 Roundtrip, found 11 hours ago

$222

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Fri, Mar 6 from Phoenix to Ontario, returning Tue, Mar 10, priced at $222 found 11 hours ago

Sat, Mar 7 - Mon, Mar 9

PHX

Phoenix

ONT

Ontario

$232 Roundtrip, found 11 hours ago

$232

Roundtrip

found 11 hours ago

Select Frontier Airlines flight, departing Sat, Mar 7 from Phoenix to Ontario, returning Mon, Mar 9, priced at $232 found 11 hours ago