Flights from Phoenix to St. Louis

Cheapest flights from Phoenix

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.

Wed, Sep 3 - Tue, Sep 9

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$277 Roundtrip, found 6 days ago

$277

Roundtrip

found 6 days ago

Select Delta flight, departing Wed, Sep 3 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Tue, Sep 9, priced at $277 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$292 Roundtrip, found 6 days ago

$292

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $292 found 6 days ago

Wed, Sep 3 - Sat, Sep 6

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$297 Roundtrip, found 6 days ago

$297

Roundtrip

found 6 days ago

Select Delta flight, departing Wed, Sep 3 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sat, Sep 6, priced at $297 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$297 Roundtrip, found 6 days ago

$297

Roundtrip

found 6 days ago

Select American Airlines flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $297 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$307 Roundtrip, found 6 days ago

$307

Roundtrip

found 6 days ago

Select American Airlines flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $307 found 6 days ago

Fri, Sep 5 - Wed, Sep 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$315 Roundtrip, found 6 days ago

$315

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Wed, Sep 10, priced at $315 found 6 days ago

Sat, Sep 6 - Sat, Sep 6

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$317 Roundtrip, found 6 days ago

$317

Roundtrip

found 6 days ago

Select Delta flight, departing Sat, Sep 6 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sat, Sep 6, priced at $317 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$317 Roundtrip, found 6 days ago

$317

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $317 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$319 Roundtrip, found 6 days ago

$319

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $319 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$325 Roundtrip, found 6 days ago

$325

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $325 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$326 Roundtrip, found 6 days ago

$326

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $326 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$328 Roundtrip, found 6 days ago

$328

Roundtrip

found 6 days ago

Select American Airlines flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $328 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$331 Roundtrip, found 6 days ago

$331

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $331 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$336 Roundtrip, found 6 days ago

$336

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $336 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$338 Roundtrip, found 6 days ago

$338

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $338 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$342 Roundtrip, found 6 days ago

$342

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $342 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$345 Roundtrip, found 6 days ago

$345

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $345 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$347 Roundtrip, found 6 days ago

$347

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $347 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$350 Roundtrip, found 6 days ago

$350

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $350 found 6 days ago

Fri, Sep 5 - Mon, Sep 8

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$355 Roundtrip, found 6 days ago

$355

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Sep 8, priced at $355 found 6 days ago