$163 Cheap Frontier Airlines flights St. Louis (STL) to Phoenix (PHX)

$163 Cheap Frontier Airlines flights St. Louis (STL) to Phoenix (PHX)

Prices were available within the past 7 days and start at $163 for one-way flights and $210 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jul 9 - Thu, Jul 10

STL

St. Louis

PHX

Phoenix

$210 Roundtrip, found 5 days ago

$210

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jul 9 from St. Louis to Phoenix, returning Thu, Jul 10, priced at $210 found 5 days ago

Fri, Sep 5 - Sat, Sep 13

STL

St. Louis

PHX

Phoenix

$312 Roundtrip, found 10 hours ago

$312

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Fri, Sep 5 from St. Louis to Phoenix, returning Sat, Sep 13, priced at $312 found 10 hours ago

Sat, Sep 6 - Mon, Sep 15

STL

St. Louis

PHX

Phoenix

$316 Roundtrip, found 10 hours ago

$316

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Sat, Sep 6 from St. Louis to Phoenix, returning Mon, Sep 15, priced at $316 found 10 hours ago

Fri, Sep 5 - Mon, Sep 15

STL

St. Louis

PHX

Phoenix

$321 Roundtrip, found 10 hours ago

$321

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Fri, Sep 5 from St. Louis to Phoenix, returning Mon, Sep 15, priced at $321 found 10 hours ago

Fri, Sep 5 - Fri, Sep 12

STL

St. Louis

PHX

Phoenix

$326 Roundtrip, found 10 hours ago

$326

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Fri, Sep 5 from St. Louis to Phoenix, returning Fri, Sep 12, priced at $326 found 10 hours ago

Fri, Sep 5 - Sat, Sep 13

STL

St. Louis

PHX

Phoenix

$336 Roundtrip, found 10 hours ago

$336

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Fri, Sep 5 from St. Louis to Phoenix, returning Sat, Sep 13, priced at $336 found 10 hours ago