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St. Louis

$98+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — STL
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap 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 January 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
Fri 2/201:33 pm
TUS
-
STL
1 stop6h 53m
Frontier
Sat 2/216:41 pm
STL
-
TUS
1 stop19h 42m
Frontier
Deal found 1/25$132
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 2/191:20 pm
TUS
-
STL
1 stop7h 06m
Frontier
Sat 2/216:41 pm
STL
-
TUS
1 stop19h 42m
Frontier
Deal found 1/25$133
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 2/191:20 pm
TUS
-
STL
1 stop7h 06m
Frontier
Fri 2/2010:11 pm
STL
-
TUS
2 stops38h 41m
Frontier
Deal found 1/25$175
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
Fri 2/201:33 pm
TUS
-
STL
1 stop6h 53m
Frontier
Tue 2/243:49 pm
STL
-
TUS
2 stops50h 08m
Frontier
Deal found 1/25$182
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 2/191:20 pm
TUS
-
STL
1 stop7h 06m
Frontier
Tue 2/243:49 pm
STL
-
TUS
2 stops50h 08m
Frontier
Deal found 1/25$183
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:10 am
TUS
-
STL
1 stop7h 28m
United Airlines
Sat 2/286:00 am
STL
-
TUS
1 stop6h 49m
United Airlines
Deal found 1/26$287
This United Airlines deal was found by Cheapflights users on 1/25. 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 2/186:30 am
TUS
-
STL
1 stop5h 44m
United Airlines
Sat 2/217:41 am
STL
-
TUS
2 stops10h 03m
United Airlines
Deal found 1/25$292

Find 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$132
(Kiwi.com)

One-way from

$98
(Trip.com)

Popular in

March

Cheapest in

February

Average price

$367
Provider with most accurate pricing for Tucson-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Tucson-Lambert-St Louis flights.
Search Deals
From Tucson to Lambert-St Louis
Search Deals
One-way flight from Tucson to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 27, 2026.
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

Thu 2/19

1:20 pm-9:26 pm

1 stop7h 06m

Lambert-St Louis

Sat 2/21

6:41 pm-1:23 pm

1 stop19h 42m

$169

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 2/19

1:20 pm-9:26 pm

1 stop7h 06m

Lambert-St Louis

Fri 2/20

10:11 pm-11:52 am

2 stops38h 41m

$175

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 2/18

5:59 pm-12:25 am

1 stop5h 26m

Lambert-St Louis

Sat 2/21

2:22 pm-10:30 pm

1 stop9h 08m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 2/25

4:03 pm-11:59 pm

1 stop6h 56m

Lambert-St Louis

Sat 2/28

4:13 pm-8:56 pm

1 stop5h 43m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 2/25

1:05 pm-10:14 pm

1 stop8h 09m

Lambert-St Louis

Sat 2/28

6:00 am-11:49 am

1 stop6h 49m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 2/18

5:59 pm-12:25 am

1 stop5h 26m

Lambert-St Louis

Mon 2/23

3:47 pm-11:01 pm

1 stop8h 14m

$323

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 4/25

5:00 am-5:21 pm

1 stop10h 21m

Lambert-St Louis

Tue 4/28

5:20 am-11:15 am

1 stop7h 55m

$327

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 3/13

5:29 pm-9:49 am

1 stop14h 20m

$98

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 2/6

12:12 pm-6:44 pm

1 stop5h 32m

$128

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 2/24

5:59 pm-12:25 am

1 stop5h 26m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 16 results
1
2

Compare providers for flights from Tucson to St. Louis

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 Tucson to St. Louis in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 Tucson-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Tucson-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Tucson-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Tucson-St. Louis flights, Cheapflights users trust Expedia the most. Expedia 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 Tucson-St. Louis 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 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 January 23, 2026.

To ensure you get the cheapest price possible for a flight from Tucson to St. Louis, 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 Tucson to St. Louis?

Currently, October is the cheapest month in which you can book a flight from Tucson to St. Louis (average of $111). Flying from Tucson to St. Louis in March is currently the most expensive (average of $368). 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.

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 January 27, 2026.
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
4,268 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,118 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,205 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,197 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

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

    Airlines like Frontier, Delta, and American Airlines fly from Tucson to St. Louis in about 5h 26m. The time it takes to get you to your destination can typically vary by up to 1h 40m. The distance from Tucson to St. Louis is about 1241 mi. This flight may include one or multiple stops.

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

    Our cheapest airline available from Tucson to St. Louis is Delta. Our recent data shows that you can find tickets from as low as $134 on this airline. Additional options worth looking into are American Airlines and Southwest, starting at $214 and $264 round-trip. Users have found that Delta is 65% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $133. Delta flights start at $133 while deals on United Airlines start at $143 one-way.

  • 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, October is the cheapest month in which you can book a flight from Tucson to St. Louis (average of $111). Flying from Tucson to St. Louis in March is currently the most expensive (average of $368). 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
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$134Average$346FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$214Average$384FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$264Average$406FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$266Average$415FlexibilityNo cancel feeOn-time69%

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