$119+ Cheap flights from St. Louis to Tucson (STL - TUS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — TUS
Jan 11 — Jan 181
1 adult, Economy
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Find cheap flights from St. Louis to Tucson with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Lambert-St Louis to Tucson are usually found in October or August, booked 44 days in advance, depart on a Tuesday or Saturday and return on a Tuesday
Cheap flight deals from St. Louis to Tucson
Cheapest flights from St. Louis to TucsonExplore the most affordable flight options available from St. Louis to Tucson. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.
Explore the most affordable flight options available from St. Louis to Tucson. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.
This Kiwi.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:10 pmSTL - TUS
1 stop21h 48mFrontier
Tue 12/307:20 pmTUS - STL
2 stops13h 42mFrontier
Deal found 12/11![Frontier logo]()
$478
This American Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:00 amSTL - TUS
1 stop5h 21mAmerican Airlines
Thu 1/16:17 pmTUS - STL
1 stop4h 34mAmerican Airlines
Deal found 12/11![American Airlines logo]()
$560
This American Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:43 pmSTL - TUS
1 stop5h 24mAmerican Airlines
Fri 1/24:41 pmTUS - STL
1 stop5h 15mAmerican Airlines
Deal found 12/11![American Airlines logo]()
$629
This American Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/189:34 amSTL - TUS
1 stop7h 10mAmerican Airlines
Sun 12/286:17 pmTUS - STL
1 stop4h 34mAmerican Airlines
Deal found 12/11![American Airlines logo]()
$682
This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2311:05 amSTL - TUS
2 stops11h 53mUnited Airlines
Thu 1/16:40 amTUS - STL
2 stops10h 14mUnited Airlines
Deal found 12/11![United Airlines logo]()
$688
This American Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/195:16 amSTL - TUS
1 stop5h 24mAmerican Airlines
Sat 12/274:02 pmTUS - STL
1 stop6h 49mAmerican Airlines
Deal found 12/10![American Airlines logo]()
$714
This Delta deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 amSTL - TUS
1 stop9h 05mDelta
Sat 12/274:14 pmTUS - STL
1 stop6h 28mDelta
Deal found 12/11![Delta logo]()
$718
Find flight deals from St. Louis to Tucson
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Tucson (TUS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $235 (Mytrip) |
One-way from | $119 (Kiwi.com) |
Popular in | March |
Cheapest in | October |
Average price | $366 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Tucson that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from St. Louis to Tucson that are best for you.
Fly from
St. Louis
Fly to
Tucson
Route
Depart
Return
Price
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Sat 1/17
1:40 pm-9:35 pm
1 stop8h 55m
Tucson
Tue 1/20
8:00 am-2:50 pm
1 stop5h 50m
$243
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Wed 2/11
6:20 am-11:05 am
1 stop5h 45m
Tucson
Sat 2/14
5:15 am-11:05 am
1 stop4h 50m
$260
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Tue 2/17
2:22 pm-10:25 pm
1 stop9h 03m
Tucson
Sat 2/21
12:26 pm-9:38 pm
1 stop8h 12m
$287
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Tue 2/17
2:26 pm-7:31 pm
1 stop6h 05m
Tucson
Sat 2/21
4:02 pm-11:50 pm
1 stop6h 48m
$287
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Wed 1/7
5:00 pm-10:27 pm
1 stop6h 27m
Tucson
Wed 1/14
8:00 am-2:48 pm
1 stop5h 48m
$287
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Wed 2/11
9:59 am-4:22 pm
1 stop7h 23m
Tucson
Tue 2/17
5:59 pm-12:25 am
1 stop5h 26m
$287
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Tue 2/24
2:22 pm-10:25 pm
1 stop9h 03m
Tucson
Sat 2/28
7:00 am-3:55 pm
1 stop7h 55m
$287
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Tue 2/24
11:25 am-9:31 pm
2 stops11h 06m
Tucson
Sat 2/28
6:30 am-1:14 pm
1 stop5h 44m
$292
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Wed 1/7
6:00 am-11:53 am
1 stop6h 53m
Tucson
Wed 1/14
10:41 am-10:58 pm
2 stops11h 17m
$292
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Fri 2/13
5:30 am-12:45 pm
1 stop8h 15m
Tucson
Wed 2/18
12:05 pm-8:35 pm
1 stop7h 30m
$312
Showing 1-10 of 23 results
Compare providers for flights from St. Louis to Tucson
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Tucson in December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Tucson flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Tucson flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Tucson flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Tucson flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Tucson flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Tucson
Have a flexible travel schedule? Discover the best time to fly to Tucson from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Tucson
How far ahead should I book a flight from St. Louis to Tucson?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Tucson. Price data was last updated on December 5, 2025.
To ensure you get the cheapest price possible for a flight from St. Louis to Tucson, you should look to book at least 43 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from St. Louis to Tucson?
Currently, September is the cheapest month in which you can book a flight from St. Louis to Tucson (average of $237). Flying from St. Louis to Tucson in March is currently the most expensive (average of $316). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from STL to TUS?
Find hourly flight availability from St. Louis to Tucson. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 5% on flights from St. Louis to Tucson by exploring options for tickets at noon.
Reviews of airlines servicing Tucson
Get insights into the airlines that provide service to Tucson. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Tucson. Reviews last updated December 12, 2025.
Read through reviews of airlines operating flights from St. Louis to Tucson, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Tucson. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Tucson?
Book flights to Tucson if you plan to visit one of these locationsSierra Vista
Green Valley
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Alternative routes for St. Louis to Tucson
See prices for flight routes from nearby airports that may be better suited for you.
Top 4 airlines flying from St. Louis to Tucson
Discover the top 4 airlines that operate flights from St. Louis to Tucson. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$256 | Average$352 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$272 | Average$356 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$274 | Average$404 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$288 | Average$397 | FlexibilityNo cancel fee | On-time69% |