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$111+ 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — TUS
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Lambert-St Louis to Tucson are usually found in October or August, booked 44 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

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 October 28, 2025.

This Mytrip deal was found by Cheapflights users on 10/26. 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 Mytrip 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
Thu 11/1312:32 pmTUS - STL
1 stop19h 35mFrontier
Deal found 10/26$171
This American Airlines deal was found by Cheapflights users on 10/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/245:17 amSTL - TUS
1 stop5h 22mAmerican Airlines
Mon 11/245:55 pmTUS - STL
1 stop4h 56mAmerican Airlines
Deal found 10/28$271
This Delta deal was found by Cheapflights users on 10/27. 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.
Mon 11/245:17 pmSTL - TUS
1 stop7h 42mDelta
Sat 12/61:49 pmTUS - STL
1 stop7h 08mDelta
Deal found 10/27$279
This Delta deal was found by Cheapflights users on 10/27. 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.
Thu 12/46:15 amSTL - TUS
1 stop6h 19mDelta
Tue 12/96:45 amTUS - STL
1 stop5h 45mDelta
Deal found 10/27$287
This Southwest deal was found by Cheapflights users on 10/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:50 amSTL - TUS
2 stops12h 30mSouthwest
Sat 12/66:45 amTUS - STL
1 stop5h 00mSouthwest
Deal found 10/27$290
This American Airlines deal was found by Cheapflights users on 10/26. 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 12/45:14 amSTL - TUS
1 stop5h 22mAmerican Airlines
Tue 12/911:30 amTUS - STL
2 stops6h 59mAmerican Airlines
Deal found 10/26$292
This Booking.com deal was found by Cheapflights users on 10/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/209:54 pmSTL - TUS
1 stop15h 59mFrontier
Tue 11/252:26 pmTUS - STL
1 stop5h 43mFrontier
Deal found 10/26$306
This Southwest deal was found by Cheapflights users on 10/26. 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 11/255:40 amSTL - TUS
1 stop6h 15mSouthwest
Tue 12/29:00 amTUS - STL
1 stop6h 10mSouthwest
Deal found 10/26$315
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/265:17 pmSTL - TUS
1 stop7h 42mDelta
Thu 12/46:00 amTUS - STL
1 stop9h 06mDelta
Deal found 10/28$317
This American Airlines deal was found by Cheapflights users on 10/26. 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 12/25:17 amSTL - TUS
1 stop5h 22mAmerican Airlines
Fri 12/59:09 amTUS - STL
1 stop6h 25mAmerican Airlines
Deal found 10/26$325

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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$171
(Mytrip)

One-way from

$111
(Frontier)

Popular in

March

Cheapest in

October

Average price

$309
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. 3% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 28, 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

Sat 12/20

7:43 pm-11:55 am

1 stop17h 12m

Tucson

Mon 1/5

12:50 pm-10:02 am

1 stop20h 12m

$279

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 1/5

2:43 pm-9:00 pm

1 stop7h 17m

Tucson

Wed 1/14

5:00 pm-10:59 pm

1 stop4h 59m

$287

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 1/6

6:20 am-11:05 am

1 stop5h 45m

Tucson

Tue 1/13

1:35 pm-9:45 pm

2 stops7h 10m

$292

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 12/10

7:00 am-11:38 am

1 stop5h 38m

Tucson

Tue 12/16

2:43 pm-10:47 pm

2 stops7h 04m

$292

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 11/26

5:17 pm-11:59 pm

1 stop7h 42m

Tucson

Thu 12/4

1:49 pm-11:42 pm

1 stop8h 53m

$317

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Fri 1/23

6:00 am-12:34 pm

1 stop7h 34m

Tucson

Sat 1/24

6:40 am-2:48 pm

1 stop7h 08m

$325

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Fri 1/23

6:10 am-1:33 pm

1 stop8h 23m

Tucson

Mon 1/26

1:44 pm-11:39 pm

1 stop8h 55m

$325

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Fri 12/5

5:12 pm-11:45 pm

1 stop7h 33m

Tucson

Sun 12/14

6:45 am-1:30 pm

1 stop5h 45m

$363

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/24

11:05 am-6:27 pm

2 stops8h 22m

Tucson

Mon 1/26

4:07 pm-11:59 pm

1 stop6h 52m

$372

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Fri 1/23

2:50 pm-5:28 pm

2 stops27h 38m

Tucson

Sun 1/25

4:29 pm-1:54 pm

1 stop20h 25m

$378

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 22 results
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Tucson flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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?

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 October 24, 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, September is the cheapest month in which you can book a flight from St. Louis to Tucson (average of $237). Flying from St. Louis to Tucson in March is currently the most expensive (average of $316). 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 October 28, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 5% 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 October 28, 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
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

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
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

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
7.9
Good
7,994 reviews
Southwest
8.0
Very good
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

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
9,001 reviews
Southwest
8.0
Very good
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

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
11,032 reviews
Southwest
8.0
Very good
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

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 45m. 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 American Airlines and Southwest, with the lowest prices starting at $273 and $274, respectively. Delta is 27% 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, September is the cheapest month in which you can book a flight from St. Louis to Tucson (average of $237). Flying from St. Louis to Tucson in March is currently the most expensive (average of $316). 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$266Average$387FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$273Average$356FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$274Average$394FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$289Average$396FlexibilityNo cancel feeOn-time69%

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