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$91+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — TUS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Tucson are usually found in August or November, booked 68 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap 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 September 11, 2025.

Round-trip from

$161
(Kiwi.com)

One-way from

$91
(Kiwi.com)

Popular in

September

Cheapest in

August

Average price

$461
From Lambert-St Louis to Tucson
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One-way flight from Lambert-St Louis to Tucson
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Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/9. 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 11/14:51 pmSTL - TUS
1 stop22h 44mFrontier
Sun 11/99:21 amTUS - STL
1 stop7h 07mFrontier
Deal found 9/9$161
This Southwest deal was found by Cheapflights users on 9/10. 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.
Tue 11/115:35 amSTL - TUS
1 stop5h 30mSouthwest
Sat 11/157:40 amTUS - STL
1 stop7h 10mSouthwest
Deal found 9/10$180
This Southwest deal was found by Cheapflights users on 9/10. 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 10/85:40 amSTL - TUS
1 stop6h 55mSouthwest
Wed 10/151:40 pmTUS - STL
1 stop5h 50mSouthwest
Deal found 9/10$189
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Thu 10/232:47 pmSTL - TUS
1 stop22h 52mFrontier
Mon 10/2712:24 pmTUS - STL
1 stop6h 40mFrontier
Deal found 9/9$196
This American Airlines deal was found by Cheapflights users on 9/10. 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 11/811:42 amSTL - TUS
1 stop5h 09mAmerican Airlines
Tue 11/115:55 pmTUS - STL
1 stop4h 56mAmerican Airlines
Deal found 9/10$199
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/84:51 pmSTL - TUS
1 stop21h 44mFrontier
Sun 11/1610:58 amTUS - STL
1 stop5h 24mFrontier
Deal found 9/10$221
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/52:38 pmSTL - TUS
1 stop25h 13mFrontier
Mon 10/1312:24 pmTUS - STL
1 stop6h 40mFrontier
Deal found 9/9$223
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/92:42 pmSTL - TUS
1 stop23h 53mFrontier
Sun 11/1610:58 amTUS - STL
1 stop5h 24mFrontier
Deal found 9/10$233

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 September 11, 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

Wed 10/8

5:40 am-10:35 am

1 stop6h 55m

Tucson

Wed 10/15

1:40 pm-9:30 pm

1 stop5h 50m

$189

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 10/23

2:47 pm-11:39 am

1 stop22h 52m

Tucson

Mon 10/27

12:24 pm-9:04 pm

1 stop6h 40m

$196

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 11/8

11:42 am-3:51 pm

1 stop5h 09m

Tucson

Tue 11/11

5:55 pm-11:51 pm

1 stop4h 56m

$199

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sun 10/5

2:38 pm-1:51 pm

1 stop25h 13m

Tucson

Mon 10/13

12:24 pm-9:04 pm

1 stop6h 40m

$223

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 9/24

7:55 pm-10:45 am

1 stop16h 50m

Tucson

Sun 9/28

11:35 am-9:06 am

1 stop19h 31m

$238

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 11/10

5:12 pm-11:59 pm

1 stop7h 47m

Tucson

Sat 11/15

1:48 pm-9:58 pm

1 stop7h 10m

$257

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 11/12

5:12 pm-11:59 pm

1 stop7h 47m

Tucson

Sat 11/15

1:48 pm-9:58 pm

1 stop7h 10m

$257

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 11/10

5:12 pm-11:59 pm

1 stop7h 47m

Tucson

Tue 11/18

3:03 pm-11:23 pm

1 stop7h 20m

$257

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 11/11

7:05 am-12:43 pm

1 stop6h 38m

Tucson

Wed 11/12

12:23 pm-6:57 pm

1 stop5h 34m

$257

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 11/8

5:15 pm-11:30 pm

1 stop7h 15m

Tucson

Thu 11/13

5:28 pm-12:46 am

1 stop6h 18m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 results
1
2

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 August 29, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Tucson, you should look to book at least 67 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, August is the cheapest month in which you can book a flight from St. Louis to Tucson (average of $362). Flying from St. Louis to Tucson in March is currently the most expensive (average of $424). 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 September 11, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 7% 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 September 11, 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.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 09m. 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 Delta is currently your cheapest option to Tucson, with prices starting at $266. Additional round-trip tickets that might be worth considering are offered by Southwest and American Airlines, with the lowest prices starting at $274 and $275, respectively. Delta is 30% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Tucson one-way?

    One-way options have recently been found by users for as low as $91 on Frontier. Other airlines that offer cheap prices include Southwest from $138 and Delta from $384 one-way.

  • 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, August is the cheapest month in which you can book a flight from St. Louis to Tucson (average of $362). Flying from St. Louis to Tucson in March is currently the most expensive (average of $424). 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
Green Valley

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$266Average$392FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$274Average$396FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$275Average$366FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$295Average$396FlexibilityNo cancel feeOn-time69%

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