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$174+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — TUS
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap flight deals from St. Louis to Tucson

Cheapest flights from St. Louis to Tucson
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 July 23, 2026.

This American Airlines deal was found by Cheapflights users on 7/21. 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 8/185:42 am
STL
-
TUS
1 stop5h 02m
American Airlines
Wed 8/195:00 am
TUS
-
STL
1 stop5h 15m
American Airlines
Deal found 7/21$347
This Southwest deal was found by Cheapflights users on 7/20. 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 9/297:00 am
STL
-
TUS
2 stops8h 30m
Southwest
Tue 10/2010:25 am
TUS
-
STL
1 stop7h 20m
Southwest
Deal found 7/20$352
This United Airlines deal was found by Cheapflights users on 7/23. 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 9/14:40 pm
STL
-
TUS
1 stop5h 50m
United Airlines
Sun 9/65:30 am
TUS
-
STL
2 stops8h 08m
United Airlines
Deal found 7/23$357
This Delta deal was found by Cheapflights users on 7/20. 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.
Tue 9/15:00 pm
STL
-
TUS
1 stop6h 46m
Delta
Sun 9/66:00 am
TUS
-
STL
1 stop6h 33m
Delta
Deal found 7/20$361
This American Airlines deal was found by Cheapflights users on 7/19. 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 9/110:16 am
STL
-
TUS
2 stops8h 33m
American Airlines
Sun 9/65:00 am
TUS
-
STL
1 stop7h 45m
American Airlines
Deal found 7/19$371
This Southwest deal was found by Cheapflights users on 7/20. 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 8/206:25 am
STL
-
TUS
1 stop6h 50m
Southwest
Wed 8/267:25 am
TUS
-
STL
2 stops8h 25m
Southwest
Deal found 7/20$380

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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$347
(American Airlines)

One-way from

$174
(American Airlines)

Popular in

February

Cheapest in

October

Average price

$446
Provider with most accurate pricing for Lambert-St Louis-Tucson flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Tucson flights.
Search Deals
From Lambert-St Louis to Tucson
Search Deals
One-way flight from Lambert-St Louis to Tucson
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 23, 2026.
Use the filters below to find and compare flights from St. Louis to Tucson that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 9/29

5:35 am-9:10 am

1 stop5h 35m

Tucson

Tue 10/20

2:15 pm-11:10 pm

1 stop6h 55m

$347

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 10/14

5:20 pm-10:00 pm

2 stops6h 40m

Tucson

Tue 10/20

2:05 pm-11:55 pm

1 stop7h 50m

$352

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 8/13

6:25 am-11:15 am

1 stop6h 50m

Tucson

Wed 8/19

10:35 am-9:10 pm

2 stops8h 35m

$352

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 9/1

4:40 pm-8:30 pm

1 stop5h 50m

Tucson

Sun 9/6

5:30 am-3:38 pm

2 stops8h 08m

$357

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 9/1

5:00 pm-9:46 pm

1 stop6h 46m

Tucson

Sun 9/6

6:00 am-2:33 pm

1 stop6h 33m

$361

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 9/10

3:45 pm-9:45 pm

2 stops8h 00m

Tucson

Sat 9/19

10:40 am-7:50 pm

2 stops7h 10m

$371

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 8/18

6:36 am-12:17 pm

1 stop7h 41m

Tucson

Wed 8/19

3:58 pm-11:42 pm

1 stop5h 44m

$375
Cheapest one-way

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 10/13

7:10 pm-11:26 pm

1 stop6h 16m

$188
Quickest one-way

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 9/8

5:42 am-8:44 am

1 stop5h 02m

$188

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 9/24

2:20 pm-9:40 pm

2 stops9h 20m

$193

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/18

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Tucson flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Tucson flight deals on Cheapflights vs. FlightHub >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 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 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?

To ensure you get the cheapest price possible for a flight from St. Louis to Tucson, you should look to book at least 28 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, October is the cheapest month in which you can book a flight from St. Louis to Tucson (average of $289). Flying from St. Louis to Tucson in February is currently the most expensive (average of $577). 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.

How much does it cost to fly round-trip from St. Louis to Tucson?

Airfare is below average for this route at the moment.

St. Louis to Tucson flights typically cost between $350 and $614 in August.
The cheapest round-trip price found within the last 5 days was $347 on American Airlines (Aug 18-Aug 19).

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 July 23, 2026.
Read through reviews of airlines operating flights from St. Louis to Tucson, such as Southwest,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad
United Airlines
7.4
Good
10,026 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad
American Airlines
7.1
Good
11,834 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

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.

  • How long is the flight from St. Louis to Tucson?

    Departing from St. Louis to Tucson will take you 5h 35m. There are 1241 mi between St. Louis and Tucson. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Flying on United Airlines is currently your cheapest option to Tucson, with prices starting at $260. Additional round-trip tickets that might be worth considering are offered by American Airlines and Southwest, with the lowest prices starting at $272 and $307, respectively. United Airlines is 36% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Tucson 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 St. Louis to Tucson?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Tucson (average of $289). Flying from St. Louis to Tucson in February is currently the most expensive (average of $577). 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 Tucson?

Book flights to Tucson if you plan to visit one of these locations
Sierra Vista
Bisbee

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Top 3 airlines flying from St. Louis to Tucson

Discover the top 3 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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$260Average$486FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$272Average$377FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$307Average$436FlexibilityNo cancel feeOn-time63%

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