$28 Find Cheap Flights from St. Louis to Arizona

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Arizona departing on 2/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Arizona

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Arizona.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Arizona.
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Cheap Flights from St. Louis to Arizona

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Tucson
Tucson2 stops$220
Flagstaff
Flagstaff1 stop$356
Las Vegas
Las Vegasnonstop$122
Tucson
Tucson2 stops$220
Flagstaff
Flagstaff1 stop$356
Las Vegas
Las Vegasnonstop$122

Book Cheap St. Louis to Arizona Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Arizona that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Arizona

Mon, Feb 16 - Thu, Feb 19
Frontier Logo
10:11 pm - 11:59 pm
STL
-
LAS
3h 48mnonstop
Frontier Logo
8:23 pm - 8:07 pm
LAS
-
STL
21h 44m
1 stop
$122Frontier
Fri, Feb 27 - Mon, Mar 2
Frontier Logo
10:11 pm - 11:59 pm
STL
-
LAS
3h 48mnonstop
Frontier Logo
3:57 pm - 9:13 pm
LAS
-
STL
3h 16mnonstop
$125Frontier
Sat, Feb 21 - Sat, Feb 28
Multiple Airlines Logo
2:51 pm - 10:26 am
STL
-
LAS
21h 35m
2 stops
Multiple Airlines Logo
12:22 pm - 5:46 pm
LAS
-
STL
3h 24mnonstop
$131Multiple Airlines
Mon, Feb 16 - Thu, Feb 19
Multiple Airlines Logo
10:11 pm - 11:59 pm
STL
-
LAS
3h 48mnonstop
Multiple Airlines Logo
11:46 am - 6:51 am
LAS
-
STL
17h 05m
2 stops
$134Multiple Airlines
Tue, Feb 17 - Sat, Feb 21
American Airlines Logo
4:13 pm - 11:07 pm
STL
-
TUS
7h 54m
1 stop
American Airlines Logo
5:58 pm - 11:59 pm
TUS
-
STL
5h 01m
1 stop
$287American Airlines
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
7:41 am - 4:44 pm
STL
-
TUS
10h 03m
2 stops
United Airlines Logo
6:30 am - 1:14 pm
TUS
-
STL
5h 44m
1 stop
$292United Airlines
Sat, Feb 28 - Sat, Mar 7
United Airlines Logo
4:30 pm - 9:31 pm
STL
-
TUS
6h 01m
1 stop
United Airlines Logo
5:43 pm - 11:34 pm
TUS
-
STL
4h 51m
1 stop
$321United Airlines
Wed, Mar 25 - Tue, Mar 31
Delta Logo
6:12 pm - 12:38 pm
STL
-
TUS
20h 26m
2 stops
Delta Logo
1:30 pm - 1:17 pm
TUS
-
STL
21h 47m
2 stops
$324Delta
Wed, Mar 25 - Tue, Mar 31
Delta Logo
6:29 am - 1:00 pm
STL
-
TUS
8h 31m
1 stop
Delta Logo
1:30 pm - 1:17 pm
TUS
-
STL
21h 47m
2 stops
$330Delta
Sat, Mar 7 - Sat, Mar 14
American Airlines Logo
4:13 pm - 8:56 pm
STL
-
TUS
5h 43m
1 stop
American Airlines Logo
5:00 am - 5:13 pm
TUS
-
STL
10h 13m
1 stop
$331American Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Arizona flights

Get data-powered insights and trends into flights from St. Louis to Arizona to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest St. Louis to Arizona flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Arizona from St. Louis found in the last 72 hours was to Phoenix, at $149 round-trip. The most popular route is from St. Louis (STL) to Phoenix Sky Harbor Intl Airport (PHX), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $149.

Can I save money by flying with a layover from St. Louis to Arizona?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $340, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from St. Louis to Arizona?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Arizona, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Arizona is November, when tickets cost $308 (return) on average. On the other hand, the most expensive months are March and June, when the average cost of round-trip tickets is $440 and $419 respectively.

What’s the cheapest day of the week to fly from St. Louis to Arizona?

The average price of all round-trip flights from St. Louis to Arizona clicked on KAYAK for each day over the last 12 months.

When flying from St. Louis to Arizona, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

How far in advance should I book a flight from St. Louis to Arizona?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Arizona, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Arizona, you should book around 3 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$28
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from St. Louis to Phoenix Sky Harbor Airport

FAQs - booking Arizona flights

  • How does KAYAK find such low prices on flights from St. Louis to Arizona?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Arizona.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Arizona?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Arizona is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Arizona?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Arizona with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Arizona?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Arizona up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Arizona?

    The cheapest time of day to fly to Arizona is generally at night, when round-trip flights cost $349 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to Arizona is generally in the morning, which is peak travel time and where the average cost of a ticket is $433.

Top tips for finding cheap flights to Arizona

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Las Vegas $120 one-way - $210 round-trip; Phoenix $172 one-way - $290 round-trip

Reviews of the top 5 airlines serving from St. Louis to Arizona

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Arizona. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Arizona? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4268 reviews
8.0Comfort
7.5Entertainment
8.1Boarding
8.6Crew
7.0Food
Airline reviews

Great vacation. Can't wait till next year for another one.

10.0 ExcellentJohn, Jan 2026
SAT - PHX
Read more Southwest reviews

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

We got exit row seats both flights. Everything was running on time

The flight crew was extremely rude and especially not helpful when our flight was delayed.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

My flight out of Baton Rouge to Atlanta was delayed by a half hour. This got us into Atlanta airport 30 minutes late. I ran through the airport to get to my connecting flight. As I approached the boarding gate, I saw the boarding door was still open and a passenger was being checked in. But when I got to the gate, the boarding agent told me they had already given away my seat and there were no empty seats on that flight. So I had to take a later flight. That has never happened to me before. Very frustrating.

Connection through Atlanta was difficult. Mechanical issue on plane caused a two hour delay. New gate was a mile away.

No WiFi. Comfort plus should have alcohol provided, crew only offered water or tea. Who the heck wants tea?

The flight was delayed and oversold. I volunteered to give up my seat for compensation. Thinking I could get a good night's sleep instead of arriving home at 2 am. It took over an hour to get the new reservation confirmed, three different gate attendants, and two red coats. It took even longer to confirm the overnight hotel, and when I arrived, the line was 45 minutes long, with two people checking in, and at least 15 people slowly, very slowly—no food except frozen convenience food, no coupon for food from airlines. Slept, headed back to the airport, and that flight had an equipment change and a gate change just as they were about to board. It took an additional hour to board as they cleaned the plane from storage.

There was no wifi available on this flight. And there were no screens, no onboard entertainment, no entertainment options at all. It was like travelling in the 1990s again, except without even a main screen for options. Seats, as usual, were tight and uncomfortable.

Good seat comfort ORF to ATL. Bad seat ATL to SEA (terrible lumbar support, hard, ouch)..

Because I was moved to an exit row, the snacks in economy comfort, the selection of snacks was better.

I upgraded to first. Quick and easy boarding. Comfortable seat with power and a nice IPA.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

The flight crew where really good. Better then the crew from BNE to SFO

Delayed, toilets did not flush, pilot parked to far away from Gate

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

No enough space plus only allowing one laggage instead of two like other airlines.

Qatar airways ,boarding arrangements at Hamid international airport could been better

I love American. I’ll never fly anyone else if I can help it.

The flight was on time and arrived early. The crew were friendly and helpful.

Overall experience was great. Flights were almost on time in departing and we arrived at our destination as scheduled. No issues with amenities or flight crew. Everything went well as as expected. Will fly again with American Airlines in the future!

Boarding was organized and timely. Food was mediocre, especially for first class travel.

I bought wifi and most of the flight could not even use it my apps would just spin. I couldn't even listen to music. super frustrating.

AA delayed the flight for 3 hours and 50 minutes, but delayed the last 2 hours, 30 minutes at a time, so if we knew before, could have stayed at home and worked instead of being at the airport wasting time... The plane's crew was excellent, not their fault.

Liked that it was on time. Staff professional and friendly.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

Everything you need to know for your flight from St. Louis to Arizona

Information on your arrival and departure airports