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Uncover the best deals on Phoenix to St Louis flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest PHX - STL Flights
Useful information for finding best airline tickets from Phoenix Sky Harbor International to Lambert St Louis International on your next trip.
Cheapest Round Trip Flight
$470
Southwest Airlines
• nonstop
• 5h
Jun 22 – Jul 01
The cheapest round trip flight from Phoenix to St Louis (PHX-STL-PHX) is currently $470
Cheapest One way Flight
$184
Southwest Airlines
• 1 stop
• 10h 10m
Jul 01
The cheapest one way flight from Phoenix to St Louis (PHX-STL) is currently $184
Cheapest Direct Flight
$470
Southwest Airlines
• nonstop
• 5h
Jun 22
The cheapest nonstop flight from Phoenix to St Louis (PHX-STL) is currently $470
Fastest Flight
4h 15m
The fastest nonstop flight from Phoenix to St Louis (PHX-STL) takes 4h 15m
Top Airlines Flying from Phoenix to St Louis
Latest Flight Deals from Phoenix (PHX) to St Louis (STL)
Compare and book low fare round-trip air tickets from Phoenix to St Louis. Ideal for travelers with confirmed return itineraries.
Jun 22 - Jul 01, Economy
Phoenix → St Louis
5h
8:40 AM - 1:40 PM • nonstop
Phoenix → St Louis
5h 10m
9:15 PM - 10:25 PM • nonstop
Southwest Airlines
Jun 22 - Jul 01, Economy
Phoenix → St Louis
4h 15m
4:40 PM - 9:35 PM • nonstop
Phoenix → St Louis
5h 10m
9:15 PM - 10:25 PM • nonstop
Southwest Airlines
Jun 22 - Jul 01, Economy
Phoenix → St Louis
8h 40m
2:50 PM - 10:10 PM • 1 stop
Phoenix → St Louis
8h 20m
8:25 AM - 11:25 AM • 1 stop
Southwest Airlines
Jun 22 - Jul 01, Economy
Phoenix → St Louis
8h 35m
5:25 PM - 12:40 AM • 1 stop
Phoenix → St Louis
9h 10m
2:10 PM - 6:00 PM • 1 stop
Southwest Airlines
Jun 22 - Jul 01, Economy
Phoenix → St Louis
27h 21m
3:05 PM - 9:46 AM • 1 stop
Phoenix → St Louis
9h 4m
8:49 AM - 12:33 PM • 1 stop
Delta Airlines
Explore competitive one-way airfare options for PHX - STL flights. Best suited for flexible or open-ended travel plans.
Flying to St Louis soon? We've surfaced some of the most affordable last-minute flights from Phoenix to St Louis, ideal for urgent plans or spontaneous trips.
Looking for the fastest way to St Louis? These direct flight options from PHX to STL offer both convenience and value—no layovers, just straight to your destination.
Jun 22 - Jul 01, Economy
Phoenix → St Louis
5h
8:40 AM - 1:40 PM • nonstop
Phoenix → St Louis
5h 10m
9:15 PM - 10:25 PM • nonstop
Southwest Airlines
Jun 22 - Jul 01, Economy
Phoenix → St Louis
4h 15m
4:40 PM - 9:35 PM • nonstop
Phoenix → St Louis
5h 10m
9:15 PM - 10:25 PM • nonstop
Southwest Airlines
Jun 22 - Jul 01, Economy
Phoenix → St Louis
4h 15m
8:55 PM - 1:50 AM • nonstop
Phoenix → St Louis
5h 10m
6:20 PM - 7:30 PM • nonstop
Southwest Airlines
Jun 23 - Jul 02, Economy
Phoenix → St Louis
4h 15m
7:25 AM - 12:20 PM • nonstop
Phoenix → St Louis
5h 10m
9:45 PM - 10:55 PM • nonstop
Southwest Airlines
Jun 23 - Jul 02, Economy
Phoenix → St Louis
4h 15m
6:35 PM - 11:30 PM • nonstop
Phoenix → St Louis
5h 10m
9:45 PM - 10:55 PM • nonstop
Southwest Airlines
FAQs on Phoenix to St Louis Flights
What are the airports in Phoenix?
PHX
What’s the most popular airline flying from PHX to STL?
The most popular airline flying from Phoenix to St Louis are
Can I fly from PHX to STL non-stop?
Yes, you can fly PHX to STL non-stop on
Which airlines fly nonstop between Phoenix and St Louis?
The non-stop flights between Phoenix and St Louis are .
What’s the earliest departure time from PHX to STL Airport?
The earliest flight leaves PHX at 6:10 am and lands in STL - Lambert St Louis International
What are the airports in St Louis?
STL
Can I make changes to my Phoenix to St Louis flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from PHX to STL?
Read the fare rules of the Phoenix to St Louis air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Phoenix and St Louis?
operate flights between Phoenix and St Louis
How long does a flight from Phoenix to St Louis take?
It takes approximately 3 hour to fly non-stop from PHX to STL, which is 1261.81 miles by air.
Which airlines provide the cheapest flights from Phoenix (PHX) to St Louis (STL) ?
In the past couple of days, the cheapest tickets to STL from PHX were found on WN : USD 184
Do I need a passport to fly between PHX and STL?
No
What’s the latest departure time from PHX to STL ?
The last flight leaves PHX at 8:55 pm
Phoenix (PHX) to St Louis (STL): Airport Information
| Origin Airport | Phoenix Sky Harbor International , Phoenix, US |
| Destination Airport | Lambert St Louis International , St Louis, US |
| Distance | 1262 miles |
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