Flights from St. Louis to Phoenix

Cheapest flights from St. Louis

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$163 Roundtrip, found 1 day ago

$163

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $163 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$196 Roundtrip, found 1 day ago

$196

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $196 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$200 Roundtrip, found 1 day ago

$200

Roundtrip

found 1 day ago

Select Delta flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $200 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$204 Roundtrip, found 1 day ago

$204

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $204 found 1 day ago

Thu, Sep 11 - Tue, Sep 16

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$211 Roundtrip, found 15 hours ago

$211

Roundtrip

found 15 hours ago

Select Spirit Airlines flight, departing Thu, Sep 11 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Tue, Sep 16, priced at $211 found 15 hours ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$229 Roundtrip, found 1 day ago

$229

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $229 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$236 Roundtrip, found 1 day ago

$236

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $236 found 1 day ago

Thu, Sep 11 - Tue, Sep 16

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$237 Roundtrip, found 15 hours ago

$237

Roundtrip

found 15 hours ago

Select Delta flight, departing Thu, Sep 11 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Tue, Sep 16, priced at $237 found 15 hours ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$240 Roundtrip, found 1 day ago

$240

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $240 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$245 Roundtrip, found 1 day ago

$245

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $245 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$245 Roundtrip, found 1 day ago

$245

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $245 found 1 day ago

Thu, Sep 11 - Tue, Sep 16

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$247 Roundtrip, found 15 hours ago

$247

Roundtrip

found 15 hours ago

Select American Airlines flight, departing Thu, Sep 11 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Tue, Sep 16, priced at $247 found 15 hours ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$250 Roundtrip, found 1 day ago

$250

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $250 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$252 Roundtrip, found 1 day ago

$252

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $252 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$258 Roundtrip, found 1 day ago

$258

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $258 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$260 Roundtrip, found 1 day ago

$260

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $260 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$261 Roundtrip, found 1 day ago

$261

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $261 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$266 Roundtrip, found 1 day ago

$266

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $266 found 1 day ago

Sat, Sep 6 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$267 Roundtrip, found 1 day ago

$267

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Sep 6 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Mon, Sep 15, priced at $267 found 1 day ago

Thu, Sep 11 - Tue, Sep 16

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$268 Roundtrip, found 15 hours ago

$268

Roundtrip

found 15 hours ago

Select Delta flight, departing Thu, Sep 11 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Tue, Sep 16, priced at $268 found 15 hours ago