$115 Cheap Frontier Airlines flights St. Louis (STL) to Phoenix (PHX)

$115 Cheap Frontier Airlines flights St. Louis (STL) to Phoenix (PHX)

Prices were available within the past 7 days and start at $115 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Mar 8 - Sun, Mar 15

STL

St. Louis

PHX

Phoenix

$238 Roundtrip, found 8 hours ago

$238

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Sun, Mar 8 from St. Louis to Phoenix, returning Sun, Mar 15, priced at $238 found 8 hours ago

Sat, Mar 7 - Tue, Mar 17

STL

St. Louis

PHX

Phoenix

$246 Roundtrip, found 8 hours ago

$246

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Sat, Mar 7 from St. Louis to Phoenix, returning Tue, Mar 17, priced at $246 found 8 hours ago

Sun, Mar 8 - Tue, Mar 17

STL

St. Louis

PHX

Phoenix

$250 Roundtrip, found 8 hours ago

$250

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Sun, Mar 8 from St. Louis to Phoenix, returning Tue, Mar 17, priced at $250 found 8 hours ago

Tue, Mar 17 - Wed, Mar 18

STL

St. Louis

PHX

Phoenix

$262 Roundtrip, found 8 hours ago

$262

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Tue, Mar 17 from St. Louis to Phoenix, returning Wed, Mar 18, priced at $262 found 8 hours ago

Wed, Mar 11 - Sun, Mar 22

STL

St. Louis

PHX

Phoenix

$273 Roundtrip, found 8 hours ago

$273

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Wed, Mar 11 from St. Louis to Phoenix, returning Sun, Mar 22, priced at $273 found 8 hours ago

Thu, Mar 12 - Sun, Mar 22

STL

St. Louis

PHX

Phoenix

$277 Roundtrip, found 8 hours ago

$277

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Thu, Mar 12 from St. Louis to Phoenix, returning Sun, Mar 22, priced at $277 found 8 hours ago