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St. Louis

$177+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — STL
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
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 August 2, 2026.

This American Airlines deal was found by Cheapflights users on 7/29. 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 8/275:00 am
TUS
-
STL
1 stop5h 15m
American Airlines
Thu 9/310:16 am
STL
-
TUS
1 stop6h 51m
American Airlines
Deal found 7/29$355
This United Airlines deal was found by Cheapflights users on 7/29. 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 8/265:30 am
TUS
-
STL
1 stop5h 10m
United Airlines
Wed 9/212:59 pm
STL
-
TUS
2 stops10h 15m
United Airlines
Deal found 7/29$360
This Southwest deal was found by Cheapflights users on 7/31. 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.
Sat 8/297:50 am
TUS
-
STL
1 stop5h 40m
Southwest
Sat 9/58:25 am
STL
-
TUS
1 stop6h 15m
Southwest
Deal found 7/31$365
This Southwest deal was found by Cheapflights users on 7/29. 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 8/267:25 am
TUS
-
STL
2 stops8h 30m
Southwest
Wed 9/22:45 pm
STL
-
TUS
2 stops7h 50m
Southwest
Deal found 7/29$366
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/297:00 am
TUS
-
STL
1 stop7h 40m
American Airlines
Tue 10/65:40 am
STL
-
TUS
2 stops7h 32m
American Airlines
Deal found 7/30$374
This American Airlines deal was found by Cheapflights users on 8/1. 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 9/33:58 pm
TUS
-
STL
1 stop5h 44m
American Airlines
Mon 9/75:42 am
STL
-
TUS
1 stop5h 02m
American Airlines
Deal found 8/1$385
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/1011:45 am
TUS
-
STL
1 stop6h 00m
American Airlines
Fri 9/252:30 pm
STL
-
TUS
1 stop7h 14m
American Airlines
Deal found 7/30$388
This Southwest deal was found by Cheapflights users on 7/31. 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 9/84:00 pm
TUS
-
STL
1 stop4h 40m
Southwest
Mon 9/146:00 am
STL
-
TUS
1 stop9h 20m
Southwest
Deal found 7/31$390
This Southwest deal was found by Cheapflights users on 7/30. 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 9/102:00 pm
TUS
-
STL
1 stop7h 15m
Southwest
Fri 9/253:45 pm
STL
-
TUS
2 stops8h 15m
Southwest
Deal found 7/30$393

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 August 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$355
(American Airlines)

One-way from

$177
(American Airlines)

Popular in

March

Cheapest in

February

Average price

$302
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. 9% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 2, 2026.
Use the filters below to find and compare flights from Tucson to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 9/3

3:58 pm-11:42 pm

1 stop5h 44m

Lambert-St Louis

Mon 9/7

5:42 am-8:44 am

1 stop5h 02m

$355

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 8/29

7:50 am-3:30 pm

1 stop5h 40m

Lambert-St Louis

Sat 9/5

8:25 am-12:40 pm

1 stop6h 15m

$365

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 9/10

2:00 pm-11:15 pm

1 stop7h 15m

Lambert-St Louis

Fri 9/25

3:45 pm-10:00 pm

2 stops8h 15m

$393

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 10/9

3:00 pm-12:35 am

2 stops7h 35m

Lambert-St Louis

Tue 10/13

8:35 am-1:25 pm

2 stops6h 50m

$399

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 10/20

5:15 am-12:40 pm

1 stop5h 25m

Lambert-St Louis

Wed 10/21

3:12 pm-9:10 pm

1 stop7h 58m

$445

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 10/9

1:26 pm-11:54 pm

1 stop8h 28m

Lambert-St Louis

Tue 10/13

6:00 am-12:16 pm

1 stop8h 16m

$449

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 9/24

3:45 pm-12:50 am

1 stop7h 05m

Lambert-St Louis

Sun 9/27

8:15 am-1:30 pm

2 stops7h 15m

$451

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 9/29

9:45 am-9:21 pm

2 stops9h 36m

Lambert-St Louis

Tue 10/6

1:29 pm-8:25 pm

2 stops8h 56m

$456
Cheapest one-way

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 9/5

9:34 am-6:05 pm

1 stop6h 31m

$178

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 9/12

5:20 am-3:20 pm

2 stops8h 00m

$183

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 18 resultsSorted by cheapest first
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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 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 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 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

What is the cheapest month to book a flight from Tucson to St. Louis?

Currently, February is the cheapest month in which you can book a flight from Tucson to St. Louis (average of $287). Flying from Tucson to St. Louis in March is currently the most expensive (average of $551). 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 August 2, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andAmerican 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
4,229 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Southwest
8.0
Very good
4,229 reviews
Southwest
8.0
Very good
4,229 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
United Airlines
7.4
Good
10,062 reviews
Southwest
8.0
Very good
4,229 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
American Airlines
7.1
Good
11,846 reviews
Southwest
8.0
Very good
4,229 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.

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 American Airlines and Southwest fly from Tucson to St. Louis in about 5h 40m. The time it takes to get you to your destination can typically vary by up to 04m. 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 American Airlines. Our recent data shows that you can find tickets from as low as $239 on this airline. Additional options worth looking into are United Airlines and Southwest, starting at $256 and $266 round-trip. Users have found that American Airlines is 43% 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. United Airlines flights start at $143 while deals on Southwest start at $163 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, February is the cheapest month in which you can book a flight from Tucson to St. Louis (average of $287). Flying from Tucson to St. Louis in March is currently the most expensive (average of $551). 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
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Tucson to St. Louis

Discover the top 3 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 August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$239Average$408FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$256Average$406FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$266Average$476FlexibilityNo cancel feeOn-time63%

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