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

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

Prices were available within the past 7 days and start at for one-way flights and $172 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Dec 2 - Wed, Dec 3

ONT

Ontario

PHX

Phoenix

$172 Roundtrip, found 4 days ago

$172

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Tue, Dec 2 from Ontario to Phoenix, returning Wed, Dec 3, priced at $172 found 4 days ago

Tue, Dec 2 - Thu, Dec 4

ONT

Ontario

PHX

Phoenix

$193 Roundtrip, found 4 days ago

$193

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Tue, Dec 2 from Ontario to Phoenix, returning Thu, Dec 4, priced at $193 found 4 days ago

Tue, Dec 2 - Fri, Dec 5

ONT

Ontario

PHX

Phoenix

$197 Roundtrip, found 4 days ago

$197

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Tue, Dec 2 from Ontario to Phoenix, returning Fri, Dec 5, priced at $197 found 4 days ago

Tue, Dec 2 - Wed, Dec 3

ONT

Ontario

PHX

Phoenix

$223 Roundtrip, found 1 day ago

$223

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Dec 2 from Ontario to Phoenix, returning Wed, Dec 3, priced at $223 found 1 day ago

Mon, Dec 1 - Wed, Dec 3

ONT

Ontario

PHX

Phoenix

$242 Roundtrip, found 4 days ago

$242

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Mon, Dec 1 from Ontario to Phoenix, returning Wed, Dec 3, priced at $242 found 4 days ago

Tue, Dec 2 - Sat, Dec 6

ONT

Ontario

PHX

Phoenix

$244 Roundtrip, found 1 day ago

$244

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Dec 2 from Ontario to Phoenix, returning Sat, Dec 6, priced at $244 found 1 day ago

Tue, Dec 2 - Fri, Dec 5

ONT

Ontario

PHX

Phoenix

$248 Roundtrip, found 1 day ago

$248

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Dec 2 from Ontario to Phoenix, returning Fri, Dec 5, priced at $248 found 1 day ago

Mon, Dec 1 - Thu, Dec 4

ONT

Ontario

PHX

Phoenix

$263 Roundtrip, found 4 days ago

$263

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Mon, Dec 1 from Ontario to Phoenix, returning Thu, Dec 4, priced at $263 found 4 days ago

Mon, Dec 1 - Fri, Dec 5

ONT

Ontario

PHX

Phoenix

$267 Roundtrip, found 4 days ago

$267

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Mon, Dec 1 from Ontario to Phoenix, returning Fri, Dec 5, priced at $267 found 4 days ago

Mon, Dec 1 - Wed, Dec 3

ONT

Ontario

PHX

Phoenix

$292 Roundtrip, found 1 day ago

$292

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Dec 1 from Ontario to Phoenix, returning Wed, Dec 3, priced at $292 found 1 day ago

Mon, Dec 1 - Sat, Dec 6

ONT

Ontario

PHX

Phoenix

$313 Roundtrip, found 1 day ago

$313

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Dec 1 from Ontario to Phoenix, returning Sat, Dec 6, priced at $313 found 1 day ago

Mon, Dec 1 - Fri, Dec 5

ONT

Ontario

PHX

Phoenix

$317 Roundtrip, found 1 day ago

$317

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Dec 1 from Ontario to Phoenix, returning Fri, Dec 5, priced at $317 found 1 day ago