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Cheap Flights from Phoenix to St Louis, MO, United States - PHX to STL

Popular flights from Phoenix to St Louis

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
May 28, 2016 May 31, 2016 $514
American Airlines
Departure Date Return Date Lowest Price
May 20, 2016 May 28, 2016 $371
May 23, 2016 Jun 6, 2016 $371
May 24, 2016 Jun 2, 2016 $371
May 24, 2016 Jun 7, 2016 $371
May 24, 2016 Jun 11, 2016 $371
United Airlines
Departure Date Return Date Lowest Price
Jul 29, 2016 Aug 3, 2016 $420

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

We have collected flight cost data from across the web for travel from Phoenix to St Louis, and have found the average flight price for this trip to be $381.

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

Airlines can adjust prices for plane tickets from Phoenix to St Louis 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 Phoenix to St Louis

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

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $471 $479
7-14 days $387 $395
14-21 days $387 $395
21-30 days $387 $395
30-60 days $387 $395
60-90 days $387 $395
90+ days $387 $395

Cheapest Day To Fly from Phoenix to St Louis

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

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$371 $371 $387 $387 $371 $387 $387

Lowest Fares Chart By Month from Phoenix to St Louis

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

Month Origin Destination Carrier Depart Date Return Date Stops Price
May Phoenix St Louis American 5/20/16 5/28/16 2 $371
June Phoenix St Louis American 6/1/16 6/11/16 0 $387
July Phoenix St Louis American 7/19/16 7/26/16 0 $387
August Phoenix St Louis American 8/9/16 8/18/16 0 $387
September Phoenix St Louis American 9/8/16 9/10/16 0 $387
October Phoenix St Louis American 10/12/16 10/19/16 0 $387
November Phoenix St Louis American 11/19/16 11/24/16 1 $422
December Phoenix St Louis American 12/12/16 12/21/16 1 $424

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

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 Phoenix to St Louis.

Next 30 Days

SunMonTueWedThuFriSat
8 9 10 11 12 13 14
$387
15 16 17 18 19 20 21
$387 $387
22 23 24 25 26 27 28
$387 $387
29 30 31 1 2 3 4
$387 $387
5 6 7 8 9 10 11
$387 $387
12 13 14 15 16 17 18
$387

TIPSave $19 by flying into Moline instead of St Louis from Phoenix

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

Your Phoenix to St Louis 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 Phoenix to St Louis is $443.

The average price for non-stop flights from Phoenix to St Louis is $387.

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

Nonstop Flight Details from Phoenix to St Louis
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
American 4 3 3 3 3 3 3 08:43 23:55

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

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 Phoenix to St Louis. 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 Phoenix to St Louis is $222.

The average price for round trip flights from Phoenix to St Louis is $440.

Phoenix to St Louis Flight Questions

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

Question: How long is a direct flight from Phoenix to St Louis?
Answer: The average Phoenix to St Louis flight time is 2 hours and 57 minutes.
Question: How many miles are there between Phoenix and St Louis?
Answer: The distance from Phoenix to St Louis is 1258 miles.
Question: How common are direct flights from Phoenix to St Louis?
Answer: There are 22 direct flights from Phoenix to St Louis.
Question: What is the most popular airline for non-stop flights from Phoenix to St Louis?
Answer: American Airlines provides 100% of the non-stop flights between Phoenix and St Louis.
Question: What are the most popular connecting cities when flying from Phoenix to St Louis?
Answer: Denver, CO

Airlines Flying from Phoenix to St Louis (PHX to STL)

Below are the different airlines that fly from Phoenix to St Louis 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 Phoenix to St Louis.

Phoenix to St Louis
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American - X X X X X X X
American DFW X X X X X X X
Alaska SEA X X X X X X X
Delta DTW X X X X X X X
Delta LAX / SLC X X X X X X X
United IAH X X X X X X X
Southwest - X X X X X X X
Southwest ICT X X X X X X X

Airports for Your Route

These pages contain information about the major airports in Phoenix and St Louis, 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 Phoenix - PHX

FlightsAirlineLowest Price
Phoenix to Chicago American, Alaska, Frontier, Spirit, United $177
Phoenix to New York American, Alaska, JetBlue, Spirit, Sun Country, United $250
Phoenix to Dallas - Ft Worth American, Alaska, Frontier, Spirit, United $81
Phoenix to Atlanta American, Alaska, Frontier, Spirit, United $178
Phoenix to Denver American, Alaska, Frontier, Spirit, United $81
Phoenix to Indianapolis American, Alaska, Frontier, United $244
Phoenix to Nashville American, Alaska, Frontier, United $278
Phoenix to Detroit American, Alaska, JetBlue, Frontier, Spirit, United $183
Phoenix to Los Angeles American, Alaska, Spirit, United, Great Lakes $77
Phoenix to Kansas City American, Alaska, United $303
Phoenix to Minneapolis - St Paul American, Alaska, Frontier, Spirit, Sun Country, United $177
Phoenix to Houston American, Alaska, Spirit, United $271
Phoenix to Milwaukee American, Alaska, Frontier, United $244
Phoenix to Springfield American, United $402
Phoenix to Memphis American, Alaska, United $377
Phoenix to Las Vegas American, United $181
Phoenix to Charlotte American, Alaska, JetBlue, Frontier, United $237
Phoenix to Orlando American, Alaska, JetBlue, Frontier, Spirit, Sun Country, United $244
Phoenix to Louisville American, Alaska, United $423
Phoenix to Washington American, Alaska, JetBlue, Frontier, Sun Country, United $244
Phoenix to Des Moines American, Alaska, United $213
Phoenix to Cincinnati American, Alaska, Frontier, United $228
Phoenix to Omaha American, Alaska, United $280
Phoenix to Bloomington - Normal American, United $254

Cheap Domestic Flights to St Louis - STL

FlightsAirlineLowest Price
Tucson to St Louis American, Alaska, United $353
Yuma to St Louis American, Alaska $420
Grand Canyon to St Louis American, Alaska Check Dates
Tucson to Chicago American, Alaska, United $385
Tucson to Dallas - Ft Worth American, Alaska, United $313
Tucson to Atlanta American, Alaska, United $244
Cheap Flights from Phoenix to St Louis, MO, United States, from $371 Round trip from PHX to STL