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St. Louis

$127+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — STL
Aug 18 — Aug 251
Mon 8/18
Mon 8/25
1 adult, Economy
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Cheapflights Tip: The best prices from Tucson to Lambert-St Louis are usually found in April or January, booked 37 days in advance, depart on a Tuesday or Monday and return on a Tuesday

Cheap 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 August 13, 2025.

Round-trip from

$233
(American Airlines)

One-way from

$127
(American Airlines)

Popular in

March

Cheapest in

April

Average price

$362
From Tucson to Lambert-St Louis
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One-way flight from Tucson to Lambert-St Louis
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Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Tucson to St. Louis

Cheapest flights from Tucson to St. Louis
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 August 13, 2025.

This American Airlines deal was found by Cheapflights users on 8/11. 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 9/2311:39 amTUS - STL
1 stop6h 36mAmerican Airlines
Wed 10/15:18 amSTL - TUS
1 stop5h 27mAmerican Airlines
Deal found 8/11$233
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/234:16 pmTUS - STL
1 stop5h 37mUnited Airlines
Tue 9/3012:25 pmSTL - TUS
2 stops10h 07mUnited Airlines
Deal found 8/11$238
This American Airlines deal was found by Cheapflights users on 8/11. 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 9/36:01 amTUS - STL
1 stop7h 08mAmerican Airlines
Sat 9/137:23 amSTL - TUS
1 stop6h 12mAmerican Airlines
Deal found 8/11$250
This Delta deal was found by Cheapflights users on 8/11. 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.
Mon 9/812:54 pmTUS - STL
1 stop7h 08mDelta
Mon 9/153:36 pmSTL - TUS
1 stop8h 00mDelta
Deal found 8/11$267
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Wed 9/174:00 pmTUS - STL
1 stop4h 50mAmerican Airlines
Sun 9/217:23 amSTL - TUS
1 stop6h 12mAmerican Airlines
Deal found 8/12$272
This FlightHub deal was found by Cheapflights users on 8/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1211:35 amTUS - STL
1 stop19h 31mFrontier
Thu 9/257:55 pmSTL - TUS
1 stop16h 50mFrontier
Deal found 8/12$273
This American Airlines deal was found by Cheapflights users on 8/12. 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 9/183:42 pmTUS - STL
1 stop4h 41mAmerican Airlines
Sun 9/216:05 amSTL - TUS
1 stop7h 30mAmerican Airlines
Deal found 8/12$279
This Southwest deal was found by Cheapflights users on 8/12. 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 9/121:35 pmTUS - STL
2 stops7h 00mSouthwest
Thu 9/255:15 amSTL - TUS
1 stop11h 45mSouthwest
Deal found 8/12$290
This Southwest deal was found by Cheapflights users on 8/12. 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.
Wed 9/175:40 amTUS - STL
2 stops10h 00mSouthwest
Sun 9/215:50 amSTL - TUS
1 stop5h 35mSouthwest
Deal found 8/12$307

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 August 13, 2025.
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

Tue 9/23

1:31 pm-10:50 pm

1 stop7h 19m

Lambert-St Louis

Tue 9/30

8:50 am-12:41 pm

1 stop5h 51m

$233

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 9/23

11:39 am-8:15 pm

1 stop6h 36m

Lambert-St Louis

Wed 10/1

5:18 am-8:45 am

1 stop5h 27m

$233

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 9/23

4:16 pm-11:53 pm

1 stop5h 37m

Lambert-St Louis

Tue 9/30

12:25 pm-8:32 pm

2 stops10h 07m

$238

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 9/23

11:00 am-6:58 pm

1 stop5h 58m

Lambert-St Louis

Thu 10/2

9:00 am-3:05 pm

1 stop8h 05m

$250

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 9/3

6:01 am-3:09 pm

1 stop7h 08m

Lambert-St Louis

Sat 9/13

7:23 am-11:35 am

1 stop6h 12m

$250

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Mon 9/8

12:54 pm-10:02 pm

1 stop7h 08m

Lambert-St Louis

Mon 9/15

3:36 pm-9:36 pm

1 stop8h 00m

$267

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 10/4

4:00 pm-10:50 pm

1 stop4h 50m

Lambert-St Louis

Sat 10/18

5:20 am-8:54 am

1 stop5h 34m

$267

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Mon 9/8

5:17 pm-11:59 pm

1 stop4h 42m

Lambert-St Louis

Mon 9/15

5:18 am-8:45 am

1 stop5h 27m

$267

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 9/17

4:00 pm-10:50 pm

1 stop4h 50m

$127

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sun 9/28

11:35 am-9:06 am

1 stop19h 31m

$132

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 20 results
1
2

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.
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 August 8, 2025.

To ensure you get the cheapest price possible for a flight from Tucson to St. Louis, you should look to book at least 37 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, August is the cheapest month in which you can book a flight from Tucson to St. Louis (average of $311). Flying from Tucson to St. Louis in March is currently the most expensive (average of $356). 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 TUS to STL?

Find hourly flight availability from Tucson to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 13, 2025.

It’s optimal to fly from Tucson to St. Louis at noon. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight in the afternoon.

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 August 13, 2025.
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.
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,979 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,920 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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.

  • What are the cheapest airlines flying from Tucson to St. Louis round-trip?

    Our cheapest airline available from Tucson to St. Louis is American Airlines. Our recent data shows that you can find tickets from as low as $233 on this airline. An additional option worth looking into is United Airlines, starting at $238. Users have found that American Airlines is 41% cheaper than the other options available to this destination.

  • Can I find deals for flights from Tucson to St. Louis that include hotel bookings?

    Yes. In addition to deals on Tucson to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Tucson to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Tucson to St. Louis.

  • Can I find deals for business class flights from Tucson to St. Louis?

    Yes. Cheapflights offers flight deals from Tucson to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, August is the cheapest month in which you can book a flight from Tucson to St. Louis (average of $311). Flying from Tucson to St. Louis in March is currently the most expensive (average of $356). 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Tucson to St. Louis

Discover the top 4 airlines that operate flights from Tucson to St. Louis. 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 August 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$223Average$336FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$266Average$450FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$266Average$390FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$308Average$386FlexibilityNo cancel feeOn-time63%

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