TUS - STL

$79 Find Cheap Flights from Tucson to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Tucson to St. Louis departing on 1/8. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Tucson to St. Louis, 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 Tucson to St. Louis, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Tucson to St. Louis (TUS-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Tucson to St. Louis 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 Tucson to St. Louis

Mon, Dec 8 - Thu, Dec 11
Southwest Logo
5:25 am - 1:20 pmTUS-STL
6h 55m1 stop
Southwest Logo
4:30 pm - 10:40 pmSTL-TUS
7h 10m1 stop
$267Southwest
Find Deal
Mon, Dec 8 - Thu, Dec 11
Southwest Logo
5:25 am - 1:20 pmTUS-STL
6h 55m1 stop
Southwest Logo
5:00 am - 12:40 pmSTL-TUS
8h 40m2 stops
$272Southwest
Find Deal
Thu, Feb 19 - Tue, Feb 24
United Airlines Logo
2:42 pm - 8:26 pmTUS-STL
4h 44m1 stop
United Airlines Logo
8:41 am - 4:02 pmSTL-TUS
8h 21m1 stop
$279United Airlines
Find Deal
Thu, Feb 19 - Tue, Feb 24
United Airlines Logo
2:42 pm - 8:26 pmTUS-STL
4h 44m1 stop
United Airlines Logo
6:30 am - 4:02 pmSTL-TUS
10h 32m2 stops
$284United Airlines
Find Deal
Wed, Jan 28 - Wed, Feb 4
Delta Logo
1:44 pm - 8:39 pmTUS-STL
5h 55m1 stop
Delta Logo
5:00 pm - 10:27 pmSTL-TUS
6h 27m1 stop
$287Delta
Find Deal
Wed, Jan 28 - Wed, Feb 4
American Airlines Logo
6:25 am - 2:43 pmTUS-STL
7h 18m2 stops
American Airlines Logo
11:55 am - 7:21 pmSTL-TUS
8h 26m1 stop
$292American Airlines
Find Deal
Wed, Nov 26 - Wed, Dec 3
United Airlines Logo
12:01 pm - 6:47 pmTUS-STL
5h 46m1 stop
United Airlines Logo
1:35 pm - 6:05 pmSTL-TUS
5h 30m1 stop
$317United Airlines
Find Deal
Mon, Dec 15 - Sat, Dec 20
Frontier Logo
7:36 pm - 10:14 amTUS-STL
37h 38m2 stops
Frontier Logo
10:10 pm - 6:58 pmSTL-TUS
21h 48m1 stop
$322Frontier
Find Deal
Fri, Jan 9 - Mon, Jan 12
American Airlines Logo
6:25 am - 2:47 pmTUS-STL
7h 22m2 stops
American Airlines Logo
3:37 pm - 10:55 pmSTL-TUS
8h 18m1 stop
$330American Airlines
Find Deal
Wed, Feb 25 - Sun, Mar 1
Delta Logo
1:40 pm - 11:40 pmTUS-STL
9h 00m1 stop
Delta Logo
6:30 am - 2:01 pmSTL-TUS
8h 31m1 stop
$347Delta
Find Deal

Everything you should know

Top airlines
Southwest
Cheapest • from $267 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 50% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 21% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$267
Overall average: $506
Southwest
Mon 12/8Thu 12/11
TUS - STL • 1 stop
Cheapest one-way
$79
Typical prices: $159-$283
Frontier
Thu 1/8
TUS - STL • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Booking Insights

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

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

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Tucson to St. Louis, 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 Tucson to St. Louis is April, where tickets cost $316 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $591 and $506 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Tucson to St. Louis, 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 Tucson to St. Louis, you should book around 4 weeks before departure, which saves you about 50% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$79
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Tucson to St. Louis

When to book flights from Tucson to St. Louis

Are your dates flexible? Find out the best times to travel from Tucson to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Tucson to St. Louis

  • What is the cheapest flight from Tucson to St. Louis?

    In the last 3 days, the lowest price for a flight from Tucson to St. Louis was $79 for a one-way ticket and $267 for a round-trip.

  • Do I need a passport to fly between Tucson and St. Louis?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Tucson to St. Louis?

    When flying out of Tucson you will be using Tucson. You will be landing at St. Louis, also known as Lambert-St Louis.

  • Which aircraft models fly most regularly from Tucson to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Tucson to St. Louis?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Tucson and St. Louis, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Tucson to St. Louis, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Tucson to St. Louis are Southwest and Delta. With an average price for the route of $386 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $326 and an overall rating of 7.9.

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

    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 Tucson to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Tucson 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 Tucson to St. Louis?

    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 to St. Louis with an airline and back to Tucson with another airline. Booking your flights between Tucson and STL can sometimes prove cheaper using this method.

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

    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 to St. Louis from Tucson up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Tucson to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Tucson to St. Louis. 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 Tucson to St. Louis? 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 4241 reviews
8.6Crew
8.0Comfort
7.0Food
7.5Entertainment
8.1Boarding
Airline reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

8.0 ExcellentGreg, Oct 2025OAK - BUR
Read more Southwest reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything 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.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

We are too tired and frustrated to comment politely at this point

Delayed delayed delayed and no offer for food or vouchers

A couple ladies from the crew were so rude and nasty. Thought they were mad at having to be there especially if you asked a question. This will make me think twice next time if I book a flight with you.

Ring in first class for an overnight flight, there was no blankets nor pillows for first class customers.

I didn't like that my paid for seat was changed 2 hours before my flight.

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Wonderful crew and early arrival to our destination. It was so nice to have free wifi access and movies too. Thank you!

Very friendly and efficient and smooth boarding. We were even way early arriving at my destination. Thank you.

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

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