$154+ Cheap flights from Tucson to St. Louis (TUS - STL)
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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — STL
Mar 15 — Mar 221
1 adult, Economy
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Find cheap flights from Tucson to St. Louis 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.Cheap flight deals from Tucson to St. Louis
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Best
Last-minute
One-way
Cheapest flights from Tucson to St. LouisExplore the most affordable flight options available from Tucson to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
Explore the most affordable flight options available from Tucson to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
This Delta deal was found by Cheapflights users on 2/11. 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.
Sat 4/257:10 am
TUS
- STL
1 stop5h 30m
Delta
Tue 4/284:41 pm
STL
- TUS
1 stop6h 50m
Delta
Deal found 2/11![Delta logo]()
$307
This American Airlines deal was found by Cheapflights users on 2/12. 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.
Sat 3/143:02 pm
TUS
- STL
1 stop6h 57m
American Airlines
Tue 3/174:13 pm
STL
- TUS
1 stop7h 54m
American Airlines
Deal found 2/12![American Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Sun 3/1511:49 am
TUS
- STL
1 stop21h 30m
Frontier
Fri 3/208:12 pm
STL
- TUS
2 stops38h 02m
Frontier
Deal found 2/11![Frontier logo]()
$339
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/73:20 pm
TUS
- STL
1 stop6h 30m
Southwest
Wed 5/201:45 pm
STL
- TUS
1 stop6h 00m
Southwest
Deal found 2/11![Southwest logo]()
$347
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:22 pm
TUS
- STL
1 stop4h 59m
United Airlines
Tue 3/177:40 am
STL
- TUS
2 stops10h 07m
United Airlines
Deal found 2/10![United Airlines logo]()
$348
This American Airlines deal was found by Cheapflights users on 2/12. 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 5/73:53 pm
TUS
- STL
1 stop5h 06m
American Airlines
Tue 5/125:20 am
STL
- TUS
1 stop5h 39m
American Airlines
Deal found 2/12![American Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:45 pm
TUS
- STL
1 stop7h 15m
Southwest
Fri 5/83:50 pm
STL
- TUS
2 stops9h 00m
Southwest
Deal found 2/11![Southwest logo]()
$362
This Southwest deal was found by Cheapflights users on 2/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/144:50 pm
TUS
- STL
1 stop7h 05m
Southwest
Tue 3/175:00 pm
STL
- TUS
2 stops7h 10m
Southwest
Deal found 2/12![Southwest logo]()
$376
Best flights from Tucson to St. LouisDiscover carefully curated flight deals from Tucson to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
Discover carefully curated flight deals from Tucson to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
This Delta deal was found by Cheapflights users on 2/12. 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.
Sat 4/2512:49 pm
TUS
- STL
1 stop8h 45m
Delta
Tue 4/286:20 am
STL
- TUS
1 stop8h 49m
Delta
Deal found 2/12![Delta logo]()
$307
This American Airlines deal was found by Cheapflights users on 2/10. 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.
Sat 4/256:00 am
TUS
- STL
1 stop8h 41m
American Airlines
Tue 4/286:11 pm
STL
- TUS
1 stop5h 32m
American Airlines
Deal found 2/10![American Airlines logo]()
$307
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:22 pm
TUS
- STL
1 stop4h 59m
United Airlines
Tue 3/177:40 am
STL
- TUS
2 stops10h 07m
United Airlines
Deal found 2/10![United Airlines logo]()
$348
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:45 pm
TUS
- STL
1 stop8h 00m
Southwest
Wed 5/205:30 am
STL
- TUS
2 stops8h 25m
Southwest
Deal found 2/11![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:59 pm
TUS
- STL
1 stop5h 26m
Delta
Tue 3/175:21 pm
STL
- TUS
1 stop6h 20m
Delta
Deal found 2/10![Delta logo]()
$307
This American Airlines deal was found by Cheapflights users on 2/12. 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.
Sat 3/143:02 pm
TUS
- STL
1 stop6h 57m
American Airlines
Tue 3/174:13 pm
STL
- TUS
1 stop7h 54m
American Airlines
Deal found 2/12![American Airlines logo]()
$325
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:45 pm
TUS
- STL
1 stop7h 15m
Southwest
Fri 5/86:00 pm
STL
- TUS
1 stop6h 50m
Southwest
Deal found 2/11![Southwest logo]()
$357
This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/177:10 am
TUS
- STL
1 stop8h 50m
Delta
Wed 6/243:42 pm
STL
- TUS
1 stop8h 05m
Delta
Deal found 2/10![Delta logo]()
$357
Last-minute flights from Tucson to St. LouisDiscover last-minute flight deals from Tucson to St. Louis. Data last updated February 13, 2026 and is based on user searches.
Discover last-minute flight deals from Tucson to St. Louis. Data last updated February 13, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:59 pm
TUS
- STL
1 stop5h 26m
Delta
Tue 3/175:21 pm
STL
- TUS
1 stop6h 20m
Delta
Deal found 2/10![Delta logo]()
$307
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:22 pm
TUS
- STL
1 stop4h 59m
United Airlines
Tue 3/177:40 am
STL
- TUS
2 stops10h 07m
United Airlines
Deal found 2/10![United Airlines logo]()
$348
This Southwest deal was found by Cheapflights users on 2/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:20 am
TUS
- STL
2 stops8h 15m
Southwest
Tue 3/175:00 pm
STL
- TUS
2 stops7h 10m
Southwest
Deal found 2/10![Southwest logo]()
$401
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Sat 3/75:43 pm
TUS
- STL
1 stop4h 51m
United Airlines
Mon 3/911:25 am
STL
- TUS
2 stops11h 24m
United Airlines
Deal found 2/11![United Airlines logo]()
$377
This American Airlines deal was found by Cheapflights users on 2/11. 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.
Sat 3/75:58 pm
TUS
- STL
1 stop5h 01m
American Airlines
Mon 3/95:12 am
STL
- TUS
1 stop5h 33m
American Airlines
Deal found 2/11![American Airlines logo]()
$389
This American Airlines deal was found by Cheapflights users on 2/12. 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.
Sat 3/143:02 pm
TUS
- STL
1 stop6h 57m
American Airlines
Tue 3/174:13 pm
STL
- TUS
1 stop7h 54m
American Airlines
Deal found 2/12![American Airlines logo]()
$325
This Southwest deal was found by Cheapflights users on 2/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/144:50 pm
TUS
- STL
1 stop7h 05m
Southwest
Tue 3/175:00 pm
STL
- TUS
2 stops7h 10m
Southwest
Deal found 2/12![Southwest logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Sun 3/1511:49 am
TUS
- STL
1 stop21h 30m
Frontier
Fri 3/208:12 pm
STL
- TUS
2 stops38h 02m
Frontier
Deal found 2/11![Frontier logo]()
$339
This American Airlines deal was found by Cheapflights users on 2/11. 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 3/164:53 pm
TUS
- STL
1 stop5h 06m
American Airlines
Fri 3/205:12 am
STL
- TUS
1 stop5h 33m
American Airlines
Deal found 2/11![American Airlines logo]()
$383
This Southwest deal was found by Cheapflights users on 2/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/234:40 pm
TUS
- STL
1 stop6h 25m
Southwest
Fri 3/275:45 am
STL
- TUS
1 stop9h 10m
Southwest
Deal found 2/10![Southwest logo]()
$388
One-way flights from Tucson to St. LouisSearch for one-way flight options from Tucson to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
Search for one-way flight options from Tucson to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
This Delta deal was found by Cheapflights users on 2/11. 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.
Wed 3/45:59 pm
TUS
- STL
1 stop5h 26m
Delta
Deal found 2/11![Delta logo]()
$154
This eDestinos deal was found by Cheapflights users on 2/11. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2311:52 am
TUS
- STL
2 stops41h 59m
Frontier
Deal found 2/11![Frontier logo]()
$164
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Wed 3/48:07 pm
TUS
- STL
2 stops13h 29m
United Airlines
Deal found 2/11![United Airlines logo]()
$199
This United Airlines deal was found by Cheapflights users on 2/12. 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.
Fri 5/151:39 pm
TUS
- STL
1 stop5h 04m
United Airlines
Deal found 2/12![United Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 2/12. 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 3/3110:31 am
TUS
- STL
2 stops6h 58m
American Airlines
Deal found 2/12![American Airlines logo]()
$209
This Southwest deal was found by Cheapflights users on 2/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/157:35 am
TUS
- STL
2 stops14h 40m
Southwest
Deal found 2/12![Southwest logo]()
$235
This Southwest deal was found by Cheapflights users on 2/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1011:40 am
TUS
- STL
2 stops9h 00m
Southwest
Deal found 2/12![Southwest logo]()
$238
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/285:15 am
TUS
- STL
1 stop4h 50m
Southwest
Deal found 2/11![Southwest logo]()
$239
This American Airlines deal was found by Cheapflights users on 2/11. 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.
Wed 2/2510:30 am
TUS
- STL
1 stop5h 43m
American Airlines
Deal found 2/11![American Airlines logo]()
$244
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:00 am
TUS
- STL
2 stops15h 57m
United Airlines
Deal found 2/10![United Airlines logo]()
$245
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2510:55 am
TUS
- STL
2 stops8h 40m
Southwest
Deal found 2/11![Southwest logo]()
$249
This eDestinos deal was found by Cheapflights users on 2/11. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/286:00 am
TUS
- STL
3 stops64h 59m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$379
Find flight deals from Tucson to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Tucson (TUS) to St. Louis (STL). 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 February 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $307 (Delta) |
One-way from | $154 (Delta) |
Popular in | March |
Cheapest in | February |
Average price | $287 |
Cheapflights Fare Finder
Customize your flight search to find flights from Tucson to St. Louis 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 February 13, 2026.
Use the filters below to find and compare flights from Tucson to St. Louis that are best for you.
Fly from
Tucson
Fly to
St. Louis
Route
Depart
Return
Price
TucsonSt. Louis
TUS - STL
TUSSTL
Tucson
Sat 4/25
12:49 pm-11:34 pm
1 stop8h 45m
Lambert-St Louis
Tue 4/28
6:20 am-1:09 pm
1 stop8h 49m
$307
TucsonSt. Louis
TUS - STL
TUSSTL
Tucson
Sat 4/25
6:00 am-4:41 pm
1 stop8h 41m
Lambert-St Louis
Tue 4/28
6:11 pm-9:43 pm
1 stop5h 32m
$307
TucsonSt. Louis
TUS - STL
TUSSTL
Tucson
Wed 3/4
5:59 pm-12:25 am
1 stop5h 26m
Lambert-St Louis
Tue 3/17
5:21 pm-9:41 pm
1 stop6h 20m
$307
TucsonSt. Louis
TUS - STL
TUSSTL
Tucson
Sat 3/14
3:02 pm-11:59 pm
1 stop6h 57m
Lambert-St Louis
Tue 3/17
4:13 pm-10:07 pm
1 stop7h 54m
$325
TucsonSt. Louis
TUS - STL
TUSSTL
Tucson
Wed 3/4
5:22 pm-11:21 pm
1 stop4h 59m
Lambert-St Louis
Tue 3/17
7:40 am-3:47 pm
2 stops10h 07m
$348
TucsonSt. Louis
TUS - STL
TUSSTL
Tucson
Thu 5/7
12:45 pm-10:45 pm
1 stop8h 00m
Lambert-St Louis
Wed 5/20
5:30 am-11:55 am
2 stops8h 25m
$352
TucsonSt. Louis
TUS - STL
TUSSTL
Tucson
Wed 5/6
12:45 pm-10:00 pm
1 stop7h 15m
Lambert-St Louis
Fri 5/8
6:00 pm-10:50 pm
1 stop6h 50m
$357
TucsonSt. Louis
TUS - STL
TUSSTL
Tucson
Wed 6/17
7:10 am-6:00 pm
1 stop8h 50m
Lambert-St Louis
Wed 6/24
3:42 pm-9:47 pm
1 stop8h 05m
$357
TucsonSt. Louis
TUS - STL
TUSSTL
Tucson
Wed 3/4
5:59 pm-12:25 am
1 stop5h 26m
$154
TucsonSt. Louis
TUS - STL
TUSSTL
Tucson
Tue 4/7
3:53 pm-10:59 pm
1 stop5h 06m
$154
Showing 1-10 of 20 results
Compare providers for flights from Tucson to St. Louis
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 Tucson to St. Louis in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Tucson-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Tucson-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Tucson-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Tucson-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub 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 Tucson-St. Louis 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 Tucson to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Tucson with our price prediction graph.
TUS-STL
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 Tucson to St. Louis
How far ahead should I book a flight from Tucson to St. Louis?
Use this chart to determine the optimal time to book a round-trip flight from Tucson to St. Louis. Price data was last updated on February 6, 2026.
To ensure you get the cheapest price possible for a flight from Tucson to St. Louis, 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 Tucson to St. Louis?
Currently, October is the cheapest month in which you can book a flight from Tucson to St. Louis (average of $111). Flying from Tucson to St. Louis in March is currently the most expensive (average of $376). 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.
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated February 13, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Tucson to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Tucson to St. Louis. 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 St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus
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Top 4 airlines flying from Tucson to St. Louis
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$134 | Average$346 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$214 | Average$381 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$256 | Average$415 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$264 | Average$407 | FlexibilityNo cancel fee | On-time63% |