$53 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 7/21. 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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Arizona, as well as popular online travel agencies
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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
Tucson1 stop$342
Flagstaff
Flagstaff1 stop$512
Tucson
Tucson1 stop$342
Flagstaff
Flagstaff1 stop$512

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

Sat, Aug 15 - Mon, Aug 17
Frontier Logo
7:10 pm - 8:43 pm
STL
-
LAS
3h 33mnonstop
Frontier Logo
5:02 pm - 12:41 am
LAS
-
STL
5h 39m
1 stop
$161Frontier
Tue, Jul 21 - Tue, Aug 4
Frontier Logo
7:03 pm - 8:36 pm
STL
-
LAS
3h 33mnonstop
Frontier Logo
6:00 am - 2:56 pm
LAS
-
STL
6h 56m
1 stop
$178Frontier
Fri, Aug 28 - Mon, Aug 31
Frontier Logo
6:45 pm - 8:20 pm
STL
-
LAS
3h 35mnonstop
Frontier Logo
12:25 pm - 5:50 pm
LAS
-
STL
3h 25mnonstop
$179Frontier
Fri, Aug 14 - Tue, Aug 18
Frontier Logo
7:10 pm - 8:43 pm
STL
-
LAS
3h 33mnonstop
Frontier Logo
6:00 am - 4:16 pm
LAS
-
STL
8h 16m
1 stop
$180Frontier
Tue, Aug 11 - Tue, Aug 18
Southwest Logo
5:00 pm - 8:35 pm
STL
-
TUS
5h 35m
1 stop
Southwest Logo
9:25 am - 5:50 pm
TUS
-
STL
6h 25m
1 stop
$342Southwest
Wed, Jul 15 - Tue, Jul 21
American Airlines Logo
8:01 am - 11:07 am
STL
-
TUS
5h 06m
1 stop
American Airlines Logo
5:45 am - 1:53 pm
TUS
-
STL
6h 08m
1 stop
$347American Airlines
Tue, Aug 11 - Tue, Aug 18
Southwest Logo
2:45 pm - 8:35 pm
STL
-
TUS
7h 50m
2 stops
Southwest Logo
9:25 am - 5:50 pm
TUS
-
STL
6h 25m
1 stop
$348Southwest
Tue, Sep 1 - Sun, Sep 6
Delta Logo
5:00 pm - 9:46 pm
STL
-
TUS
6h 46m
1 stop
Delta Logo
6:00 am - 2:33 pm
TUS
-
STL
6h 33m
1 stop
$357Delta
Thu, Sep 3 - Tue, Sep 8
American Airlines Logo
8:36 am - 12:17 pm
STL
-
TUS
5h 41m
1 stop
American Airlines Logo
3:58 pm - 11:42 pm
TUS
-
STL
5h 44m
1 stop
$361American Airlines
Thu, Dec 10 - Mon, Dec 14
Delta Logo
6:30 am - 12:54 pm
STL
-
TUS
7h 24m
1 stop
Delta Logo
2:30 pm - 11:18 pm
TUS
-
STL
7h 48m
1 stop
$375Delta
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.

How much is a round-trip flight from St. Louis to Arizona?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Arizona departing in August.

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 5 days was to Phoenix, at $306 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 5 days was $306.

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

The average price for all round-trip flights from St. Louis to Arizona depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Arizona is generally at night, when round-trip flights cost $311 on average. Morning departures are around 13% 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 $445.

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 $398, 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 December, when tickets cost $40 (return) on average. On the other hand, the most expensive months are June and April, when the average cost of round-trip tickets is $210 and $177 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 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$53
Best time to beat the crowds with an average 15% drop in price.
Flight from St. Louis to Las Vegas

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.

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 $186 one-way - $268 round-trip; Phoenix $204 one-way - $409 round-trip

Reviews of the top 4 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.
7.9
SouthwestOverall score based on 4244 reviews
8.6Crew
7.0Food
8.1Boarding
8.0Comfort
7.5Entertainment
Airline reviews

Snacks are always pretzels. Why can't you also offer peanuts ?

6.0 GoodAnonymous, Mar 2026
STL - HOU
Read more Southwest reviews

Snacks are always pretzels. Why can't you also offer peanuts ?

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

Very good. Sad to learn Southwest is going start to charge for bags

Exceptional crew! Friendly and professional. Pleasant attitude and treated everyone with respect.

The flight was promptly on schedule and Southwest delivered everything they promised. No excuses for any shortfalls just 100% ownership of their responsibilities and business. The boarding and seating policy is a complete shambles. What started out as a great idea when Southwest first hit the market has been turned into a disaster due to the lack of integrity in many of the people who fly Southwest and take advantage of Southwest generosity at the expense of their fellow passengers.

Crew was excellent - Plane was fine. Media was good, could use more kid shows; Not a fan of the brownie brittle -- snack could be slightly better.

Left on time and arrived early. Brand new plane and no parts missing. Comfortable seats. The actual Captain spoke prior to the flight and reassured everyone about safety. Crew was so nice and fun. Perfect flight!

Everything went smoothly and the plane wasn’t full. It was delayed though. The delay was increased due to a crew change which was frustrating.

Love Southwest! Always a good trip with a happy crew who goes out of their way to be kind and fun.

friendly staff for the most part. they thought we were going to have bad turbulence so no drink service. there wasn't any turbulence. Iwish you had a choice of snacks

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

I liked the snacks and the flight attendants were friendly.

Other than a way way too cold cabinets for the entire flight, all was great

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Absolute disaster. Rude, uncooperative staff. Staff ignores and pretends you don’t exist when you are asking them a question. Erroneous departure gate and baggage claim information. Equipment not working for purchase of drinks. Overly expensive baggage check-in fees. Overly crowded. Dirty airplane. Passengers coughing incessantly as if they were being gassed. Circled airport in flight several times and waited on the tarmac for 1.5 hours. The worst experience ever. Consider another industry. The travel industry is not for you.

The flight was mostly on time, smooth and deplaning was quick. Baggage was really quick at the claim. Comfort was so-so and I paid for economy plus. It was still too crowded and why was a family of 5 scattered all around the plane?

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

Older plane. Food was really bad, almost not worth the effort. Huge difference with European based airlines.

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Good crew and flight was on time. It’s a small plane with limited overhead luggage space. They said the overhead space was full and I had to check my bag. There was still space when I got on. Waiting for my checked luggage added 30 minutes to my trip. Not the end of the world but also not great.

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

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

Overall boarding and debarking is a joke. I dont even bring luggage anymore on trips because you can never allow them to be place then in the overhead bin or you have to pay or you check them which is even worse having to wait for your luggage on the tarmac.

First time flying internationally with AA and probably my last. Not military friendly at all. Didn't allow free checked bag for military family members (dependents) on orders like other airlines. We were charged $100 for baggage weight overage (5 lbs!)even though we had military orders allowing us extra.. Didn’t allow military members to board early. Inefficient and long wait time to board. Seats are smaller and more uncomfortable than other airlines.. no drink service for over 7 hrs of flight! After initial meal was served, the crew never offered a snack or drinks until the breakfast's was served 1 1/2 hrs before landing. Overall expensive and poor experience for the entire flight.

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They switched our terminal 3 times and we were delayed for four plus hours!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

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

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Flight was delayed one hour. Notification to the crowd waiting near the gate was terrible…announcements were unclear and very hard to hear and therefore understand. Frontier does NOT send texts to notify, only email. The reader board over the gate itself was NEVER updated to indicate the gate had been changed. It’s like a bunch of children are running things.

We’ve all seen the YouTube vids of out of control passengers. But this was an instance of a highly aggressive, bully flight attendant. Yelling in the face of a vet with PTSD who was texting their family. And no , we had not yet been instructed to put our phones in airplane mode. My suggestion is that you should pay whatever difference there is in order to avoid Frontier airlines. Additionally, after 3hrs trying to get customer service frontier offered a $25 voucher. I declined. This experience was so traumatic. To be verbally assaulted and abused by a flight attendant that has the power to say “boo” and I miss my flight ( which was to a family member’s funeral ). Frontier is unsafe and I cannot impress enough how much I discourage anyone ( esp those with any kind of disability like PTSD ) flying on Frontier.

I have come to accept Frontier as an absolute no-frills airline, paying for everything I want. A 4.5-hour flight should provide me with a complimentary beverage—rather, $4.9x for a soda. Or a bottle of water ought to be extended at no cost. 4 beers are on the menu, but only 1 type of beer is available (at $9.95). Also, so many restrictions to using a voucher from Barclay‘s Credit Card. Finally, try to reach a live agent for Frontier- impossible!

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

Information on your arrival and departure airports