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$107+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — TUS
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 44 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 July 29, 2025.

Round-trip from

$215
(FlightHub)

One-way from

$107
(FlightHub)

Popular in

September

Cheapest in

August

Average price

$356
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 ($7 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 29, 2025.

This FlightHub deal was found by Cheapflights users on 7/27. 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.
Wed 7/307:29 pmSTL - TUS
1 stop17h 16mFrontier
Thu 8/712:45 pmTUS - STL
1 stop22h 57mFrontier
Deal found 7/27$215
This Delta deal was found by Cheapflights users on 7/27. 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 9/37:00 amSTL - TUS
1 stop6h 44mDelta
Sat 9/611:15 amTUS - STL
1 stop8h 03mDelta
Deal found 7/27$267
This American Airlines deal was found by Cheapflights users on 7/27. 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 9/35:17 amSTL - TUS
2 stops8h 00mAmerican Airlines
Sat 9/61:31 pmTUS - STL
1 stop4h 44mAmerican Airlines
Deal found 7/27$272
This Southwest deal was found by Cheapflights users on 7/28. 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 10/205:35 amSTL - TUS
1 stop5h 10mSouthwest
Thu 10/237:05 amTUS - STL
2 stops10h 10mSouthwest
Deal found 7/28$338
This United Airlines deal was found by Cheapflights users on 7/28. 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 11/269:00 amSTL - TUS
1 stop8h 02mUnited Airlines
Thu 12/47:35 amTUS - STL
2 stops8h 28mUnited Airlines
Deal found 7/28$442
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/64:14 pmSTL - TUS
2 stops19h 42mAlaska Airlines
Sun 11/97:30 amTUS - STL
2 stops15h 29mAlaska Airlines
Deal found 7/27$458

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 29, 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 9/3

7:54 pm-10:45 am

1 stop16h 51m

Tucson

Fri 9/5

2:41 pm-4:03 pm

1 stop23h 22m

$215

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 9/3

7:00 am-11:44 am

1 stop6h 44m

Tucson

Sat 9/6

11:15 am-9:18 pm

1 stop8h 03m

$267

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 9/3

5:17 am-11:17 am

2 stops8h 00m

Tucson

Sat 9/6

1:31 pm-8:15 pm

1 stop4h 44m

$272

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 9/3

4:40 pm-8:18 pm

1 stop5h 38m

Tucson

Thu 9/4

6:21 am-4:53 pm

1 stop8h 32m

$277

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 10/20

5:35 am-8:45 am

1 stop5h 10m

Tucson

Thu 10/23

7:05 am-7:15 pm

2 stops10h 10m

$338

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 11/6

4:14 pm-10:56 am

2 stops19h 42m

Tucson

Sun 11/9

7:30 am-11:59 pm

2 stops15h 29m

$458

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 8/9

7:29 pm-10:45 am

1 stop17h 16m

$107

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 9/1

7:23 am-11:27 am

1 stop6h 04m

$194

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 8/14

5:11 pm-9:47 pm

1 stop6h 36m

$224

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Fri 9/5

9:17 am-8:18 pm

3 stops13h 01m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 11 results
1
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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 July 25, 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, January is the cheapest month in which you can book a flight from St. Louis to Tucson (average of $364). Flying from St. Louis to Tucson in March is currently the most expensive (average of $425). 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 July 29, 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 July 29, 2025.
Read through reviews of airlines operating flights from St. Louis to Tucson, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    Flying on Frontier is currently your cheapest option to Tucson, with prices starting at $215. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $267 and $272, respectively. Frontier is 42% 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 $107 on Frontier. Other airlines that offer cheap prices include American Airlines from $194 and Delta from $224 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, January is the cheapest month in which you can book a flight from St. Louis to Tucson (average of $364). Flying from St. Louis to Tucson in March is currently the most expensive (average of $425). 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$266Average$392FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$289Average$367FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$295Average$396FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$297Average$383FlexibilityNo cancel feeOn-time63%

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