$84 Cheap Frontier Airlines flights Ontario (ONT) to Phoenix (PHX)

$84 Cheap Frontier Airlines flights Ontario (ONT) to Phoenix (PHX)

Prices were available within the past 7 days and start at $84 for one-way flights and $143 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Sep 8 - Wed, Sep 10

ONT

Ontario

PHX

Phoenix

$143 Roundtrip, found 5 days ago

$143

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Sep 8 from Ontario to Phoenix, returning Wed, Sep 10, priced at $143 found 5 days ago

Mon, Sep 8 - Wed, Sep 10

ONT

Ontario

PHX

Phoenix

$149 Roundtrip, found 5 days ago

$149

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Sep 8 from Ontario to Phoenix, returning Wed, Sep 10, priced at $149 found 5 days ago

Sat, Aug 9 - Tue, Aug 12

ONT

Ontario

PHX

Phoenix

$168 Roundtrip, found 10 hours ago

$168

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Sat, Aug 9 from Ontario to Phoenix, returning Tue, Aug 12, priced at $168 found 10 hours ago

Fri, Aug 8 - Tue, Aug 12

ONT

Ontario

PHX

Phoenix

$173 Roundtrip, found 10 hours ago

$173

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Ontario to Phoenix, returning Tue, Aug 12, priced at $173 found 10 hours ago

Sat, Aug 9 - Fri, Aug 15

ONT

Ontario

PHX

Phoenix

$178 Roundtrip, found 10 hours ago

$178

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Sat, Aug 9 from Ontario to Phoenix, returning Fri, Aug 15, priced at $178 found 10 hours ago

Thu, Aug 7 - Mon, Aug 11

ONT

Ontario

PHX

Phoenix

$183 Roundtrip, found 10 hours ago

$183

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Thu, Aug 7 from Ontario to Phoenix, returning Mon, Aug 11, priced at $183 found 10 hours ago