$120 Cheap Frontier Airlines flights St. Louis (STL) to Phoenix (PHX)

$120 Cheap Frontier Airlines flights St. Louis (STL) to Phoenix (PHX)

Prices were available within the past 7 days and start at $120 for one-way flights and $260 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 3 - Tue, Jun 9

STL

St. Louis

PHX

Phoenix

$260 Roundtrip, found 1 day ago

$260

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Jun 3 from St. Louis to Phoenix, returning Tue, Jun 9, priced at $260 found 1 day ago

Wed, Jun 3 - Sat, Jun 6

STL

St. Louis

PHX

Phoenix

$274 Roundtrip, found 1 day ago

$274

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Jun 3 from St. Louis to Phoenix, returning Sat, Jun 6, priced at $274 found 1 day ago

Wed, Jun 3 - Sun, Jun 7

STL

St. Louis

PHX

Phoenix

$280 Roundtrip, found 1 day ago

$280

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Jun 3 from St. Louis to Phoenix, returning Sun, Jun 7, priced at $280 found 1 day ago

Sat, May 30 - Sat, Jun 6

STL

St. Louis

PHX

Phoenix

$294 Roundtrip, found 1 day ago

$294

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, May 30 from St. Louis to Phoenix, returning Sat, Jun 6, priced at $294 found 1 day ago

Wed, Jun 3 - Thu, Jun 4

STL

St. Louis

PHX

Phoenix

$300 Roundtrip, found 1 day ago

$300

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Jun 3 from St. Louis to Phoenix, returning Thu, Jun 4, priced at $300 found 1 day ago

Sat, May 30 - Thu, Jun 4

STL

St. Louis

PHX

Phoenix

$320 Roundtrip, found 1 day ago

$320

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, May 30 from St. Louis to Phoenix, returning Thu, Jun 4, priced at $320 found 1 day ago

Sun, May 24 - Wed, May 27

STL

St. Louis

PHX

Phoenix

$380 Roundtrip, found 17 hours ago

$380

Roundtrip

found 17 hours ago

Select Frontier Airlines flight, departing Sun, May 24 from St. Louis to Phoenix, returning Wed, May 27, priced at $380 found 17 hours ago