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Cheap Flights from St Louis to Phoenix, AZ, United States - STL to PHX Last modified: May 30, 2016 1:52 PM

Popular flights from St Louis to Phoenix Last modified: May 30, 2016 1:52 PM

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska Airlines
Departure Date Return Date Lowest Price
Sep 13, 2016 Sep 20, 2016 $565
Sep 20, 2016 Oct 4, 2016 $565
American Airlines
Departure Date Return Date Lowest Price
Sep 13, 2016 Sep 20, 2016 $327
Sep 20, 2016 Oct 4, 2016 $327
Sep 21, 2016 Sep 28, 2016 $327
Frontier Airlines
Departure Date Return Date Lowest Price
Sep 13, 2016 Sep 20, 2016 $244
Sep 21, 2016 Sep 28, 2016 $244
United Airlines
Departure Date Return Date Lowest Price
Sep 13, 2016 Sep 20, 2016 $344
Sep 20, 2016 Oct 4, 2016 $344
Sep 21, 2016 Sep 28, 2016 $344

How Much Does it Cost to Fly from St Louis to Phoenix (STL to PHX)?

We have collected flight cost data from across the web for travel from St Louis to Phoenix, and have found the average flight price for this trip to be $321.

When Can I Buy the Cheapest Flight from St Louis to Phoenix (STL to PHX)?

Airlines can adjust prices for plane tickets from St Louis to Phoenix based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

How far in advance should you book flights from St Louis to Phoenix

The chart below shows up-to-date information regarding how far in advance a flight from St Louis to Phoenix should be booked.

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $869 $344
7-14 days $465 $344
14-21 days $465 $307
21-30 days $475 $336
30-60 days $465 $319
60-90 days $369 $290
90+ days $327 $244

Cheapest Day To Fly from St Louis to Phoenix

The chart below shows up-to-date information regarding the cheapest days to fly from St Louis to Phoenix.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$336 $336 $290 $369 $311 $290 $311

Lowest Fares Chart By Month from St Louis to Phoenix

The chart below shows the lowest fare by month when flying from St Louis to Phoenix.

Month Origin Destination Carrier Depart Date Return Date Stops Price
May St Louis Phoenix American 5/31/16 6/9/16 2 $609
June St Louis Phoenix Frontier 6/15/16 6/19/16 1 $307
July St Louis Phoenix Frontier 7/20/16 7/27/16 1 $319
August St Louis Phoenix Frontier 8/10/16 8/16/16 1 $290
September St Louis Phoenix Frontier 9/13/16 9/20/16 1 $244
October St Louis Phoenix Frontier 10/12/16 10/19/16 1 $244
November St Louis Phoenix American 11/21/16 11/29/16 0 $369
December St Louis Phoenix American 12/21/16 12/25/16 0 $465

Cheapest Weekend Non-Stop Flights for the Next 30 Days from St Louis to Phoenix

If you're ready to take a trip in the next 30 days and want to fly on the weekend, you might be wondering which weekend is the cheapest to fly. The chart below shows up-to-date data regarding weekend flight prices from St Louis to Phoenix.

Next 30 Days

SunMonTueWedThuFriSat
29 30 31 1 2 3 4
$869
5 6 7 8 9 10 11
$869 $579
12 13 14 15 16 17 18
$579 $475
19 20 21 22 23 24 25
$475 $485
26 27 28 29 30 1 2
$485 $475
3 4 5 6 7 8 9
$475

Non-Stop vs Connecting Flights from St Louis to Phoenix (STL to PHX)

Your St Louis to Phoenix flight can be significantly cheaper by choosing a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from St Louis to Phoenix is $411.

The average price for non-stop flights from St Louis to Phoenix is $369.

The chart below shows up to date information regarding non-stop flights from St Louis to Phoenix.

Nonstop Flight Details from St Louis to Phoenix
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
American 4 3 4 4 4 4 4 07:40 20:40

Round Trip vs One Way Flights from St Louis to Phoenix (STL to PHX)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from St Louis to Phoenix. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from St Louis to Phoenix is $210.

The average price for round trip flights from St Louis to Phoenix is $409.

St Louis to Phoenix Flight Questions

Below are some common questions that asked about this flight route:

Question: How long is a direct flight from St Louis to Phoenix?
Answer: The average St Louis to Phoenix flight time is 3 hours and 17 minutes.
Question: How many miles are there between St Louis and Phoenix?
Answer: The distance from St Louis to Phoenix is 1258 miles.
Question: How common are direct flights from St Louis to Phoenix?
Answer: There are 26 direct flights from St Louis to Phoenix.
Question: What is the most popular airline for non-stop flights from St Louis to Phoenix?
Answer: American Airlines provides 100% of the non-stop flights between St Louis and Phoenix.
Question: What are the most popular connecting cities when flying from St Louis to Phoenix?
Answer: Chicago, IL

Airlines Flying from St Louis to Phoenix (STL to PHX) Number of flights searched: 192Last modified: May 30, 2016 1:52 PM

Below are the different airlines that fly from St Louis to Phoenix with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from St Louis to Phoenix.

St Louis to Phoenix
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American - X X X X X X X
American LAX X X X X X X X
Alaska PDX X X X X X X X
Delta MSP X X X X X X X
Delta SLC / LAX X X X X X X X
Frontier DEN X
United ORD X X X X X X X
Southwest - X X X X X X X
Southwest MCI X X X X X X X

Airports for Your Route

These pages contain information about the major airports in St Louis and Phoenix, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to Las Vegas American, Alaska, Frontier, United $108
St Louis to Los Angeles American, Alaska, Frontier, United $244
St Louis to Tucson American, United $400
St Louis to Dallas - Ft Worth American, Alaska, United $209
St Louis to San Diego American, Alaska, Frontier, United $241
St Louis to Denver American, Alaska, Frontier, United $108
St Louis to Chicago American, Alaska, United $219
St Louis to San Francisco American, Alaska, Frontier, United $244
St Louis to Grand Canyon American, Alaska, United $482
St Louis to Atlanta American, Alaska, Frontier, United $78
St Louis to Albuquerque American, Alaska, United $348
St Louis to New York American, Alaska, United $235
St Louis to Palm Springs American, Alaska, United $324
St Louis to Yuma American, Alaska, United Check Dates

Cheap Domestic Flights to Phoenix - PHX

FlightsAirlineLowest Price
Peoria to Phoenix American, United $244
Moline to Phoenix American, United $234
Springfield to Phoenix American, United $368
Bloomington - Normal to Phoenix American $326
Evansville to Phoenix American, United $385
Champaign to Phoenix American $492
Springfield to Phoenix American, United $477
Peoria to Las Vegas American, United $304
Springfield to Las Vegas American, United $392
Moline to Las Vegas American, Alaska, United $304
Springfield to Las Vegas American, United $383
Evansville to Las Vegas American, United $409
Champaign to Las Vegas American $426
Springfield to Tucson American, Alaska, United $631
Peoria to Tucson American, United $512
Bloomington - Normal to Los Angeles American $337
Cheap Flights from St Louis to Phoenix, AZ, United States, from $244 Round trip from STL to PHX