Cheap Flights from Phoenix to Saint Louis

Cheapest flights from Phoenix to Saint Louis

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Phoenix to Saint Louis. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$172

Frontier Airlines

1 layover

8h 13m

06/14/2026

The cheapest one-way flight from Phoenix to Saint Louis departs on 06/14/2026, is operated by Frontier Airlines and costs $172

Cheapest round trip flight

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There is no information about the cheapest roundtrip flight from Phoenix to Saint Louis

The fastest flight

8h 13m

Fastest flight from Phoenix to Saint Louis takes 8h 13m

Direct flights

Once a week

There are direct flights on this route 1 day a week: Su

Earliest flight

5:35 AM

Latest flight

6:55 PM

Direct flights count

9

Distance

2043km

Timezone difference

1h

The distance between Phoenix and Saint Louis is 2043km (1267 miles). There are 9 direct flights from Phoenix to Saint Louis. The time difference between Phoenix and Saint Louis is 1h. Flights from Phoenix begin at 5:35 AM. The latest flight from Phoenix departs at 6:55 PM

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from Phoenix to Saint Louis by month

We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Phoenix to Saint Louis

June 2026

Lowest price

on average:

$172

Avg Price

Airlines operating on route

The route Phoenix — Saint Louis is served by several airlines: American Airlines and Frontier Airlines. This gives passengers more freedom in choosing flights. You can consider not only the price but also schedules, baggage policies, and onboard service. Our service compares all offers so you can find tickets from $172 and choose the most convenient option. Thanks to airline competition, you may also find promotional fares or special offers, helping you save even more. Plan your trip in advance and choose the best flights without overpaying.

American Airlines

starting at $555

Frontier Airlines

starting at $172

Non-stop flights from Phoenix to Saint Louis

A non-stop flight is the most convenient and comfortable way to fly from Phoenix to Saint Louis, despite the fact that sometimes flights with transfers can cost significantly less.

Phoenix — Saint Louis

PHX — STL

06/14/2026

Departure

Direct flight

AA3179

starting at $555

Schedule of direct flights from Phoenix to Saint Louis

There are most likely no direct flights on the Phoenix — Saint Louis route

Phoenix airports overview

Phoenix-Mesa Gateway Airport

•

AZA

42km

Phoenix Sky Harbor International Airport

•

PHX

8km

Scottsdale Airport

•

SCF

24km

Serves Scottsdale, Arizona, as a general aviation reliever for the Phoenix area, primarily handling private and business jets with easy access to downtown Scottsdale, Phoenix, and nearby resorts.

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Saint Louis airports overview

Lambert-St. Louis International Airport

•

STL

20km

Serving St. Louis, Missouri, and the surrounding metro area, it handles domestic and limited international flights with major carriers, a compact terminal, and convenient access to downtown.

Spirit of St. Louis Airport

•

SUS

20km

Serving the St. Louis metro in western St. Louis County, Missouri, primarily a reliever and general aviation field with FBO services, hangars and private-charter operations.

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Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

What is the cheapest price for flights from Phoenix to Saint Louis?

The cheapest flight ticket from Phoenix to Saint Louis according to data for the last 48 hours costs $172

When is the best time to buy air tickets on the route Phoenix — Saint Louis?

Often the best time to buy tickets from Phoenix to Saint Louis is 2 months before departure.

When is the cheapest time of year to fly from Phoenix to Saint Louis?

Based on statistics over the past years, the lowest prices for flights from Phoenix to Saint Louis can be found flying in these months: June.

How long does it take to fly from Phoenix to Saint Louis?

The fastest flights from Phoenix to Saint Louis start from 8 hours 13 minutes in the air.

Which airline can fly direct from Phoenix to Saint Louis?

The following airlines operate direct flights on the route Phoenix — Saint Louis: American Airlines

Special offers and sales on air tickets from Phoenix to Saint Louis

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from Phoenix to Saint Louis

Alternative routes

Albuquerque ➜ Saint Louis•Bakersfield ➜ Saint Louis•El Paso ➜ Saint Louis•Hermosillo ➜ Saint Louis•Long Beach ➜ Saint Louis•Las Cruces ➜ Saint Louis•Mexicali ➜ Saint Louis•Tijuana ➜ Saint Louis•Tucson ➜ Saint Louis•Yuma ➜ Saint Louis•Phoenix ➜ Nashville•Phoenix ➜ Burlington•Phoenix ➜ Chicago•Phoenix ➜ Cedar Rapids•Phoenix ➜ Champaign•Phoenix ➜ Evansville•Phoenix ➜ Indianapolis•Phoenix ➜ Memphis

•••••••••••••••••••

Cheapest one way flight

$172

Frontier Airlines

1 layover

8h 13m

06/14/2026

The cheapest one-way flight from Phoenix to Saint Louis departs on 06/14/2026, is operated by Frontier Airlines and costs $172

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from Phoenix to Saint Louis

The fastest flight