$130 Cheap Frontier Airlines flights St. Louis (STL) to Phoenix (PHX)

$130 Cheap Frontier Airlines flights St. Louis (STL) to Phoenix (PHX)

Prices were available within the past 7 days and start at $130 for one-way flights and $170 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Apr 22 - Thu, Apr 23

STL

St. Louis

PHX

Phoenix

$170 Roundtrip, found 6 hours ago

$170

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Wed, Apr 22 from St. Louis to Phoenix, returning Thu, Apr 23, priced at $170 found 6 hours ago

Sat, Apr 18 - Thu, Apr 23

STL

St. Louis

PHX

Phoenix

$190 Roundtrip, found 6 hours ago

$190

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Sat, Apr 18 from St. Louis to Phoenix, returning Thu, Apr 23, priced at $190 found 6 hours ago

Sat, Apr 18 - Tue, Apr 21

STL

St. Louis

PHX

Phoenix

$210 Roundtrip, found 6 hours ago

$210

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Sat, Apr 18 from St. Louis to Phoenix, returning Tue, Apr 21, priced at $210 found 6 hours ago

Wed, Apr 22 - Sun, Apr 26

STL

St. Louis

PHX

Phoenix

$215 Roundtrip, found 6 hours ago

$215

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Wed, Apr 22 from St. Louis to Phoenix, returning Sun, Apr 26, priced at $215 found 6 hours ago

Sun, Apr 19 - Thu, Apr 23

STL

St. Louis

PHX

Phoenix

$216 Roundtrip, found 6 hours ago

$216

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Sun, Apr 19 from St. Louis to Phoenix, returning Thu, Apr 23, priced at $216 found 6 hours ago

Sat, Apr 18 - Sun, Apr 26

STL

St. Louis

PHX

Phoenix

$235 Roundtrip, found 6 hours ago

$235

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Sat, Apr 18 from St. Louis to Phoenix, returning Sun, Apr 26, priced at $235 found 6 hours ago

Sat, Apr 18 - Mon, Apr 20

STL

St. Louis

PHX

Phoenix

$236 Roundtrip, found 6 hours ago

$236

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Sat, Apr 18 from St. Louis to Phoenix, returning Mon, Apr 20, priced at $236 found 6 hours ago

Wed, Jul 8 - Tue, Jul 14

STL

St. Louis

PHX

Phoenix

$260 Roundtrip, found 5 days ago

$260

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jul 8 from St. Louis to Phoenix, returning Tue, Jul 14, priced at $260 found 5 days ago

Sun, Apr 19 - Sun, Apr 26

STL

St. Louis

PHX

Phoenix

$261 Roundtrip, found 6 hours ago

$261

Roundtrip

found 6 hours ago

Select Frontier Airlines flight, departing Sun, Apr 19 from St. Louis to Phoenix, returning Sun, Apr 26, priced at $261 found 6 hours ago