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St. Louis

$84+ 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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — STL
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Tucson to Lambert-St Louis are usually found in April or January, booked 43 days in advance, depart on a Tuesday or Monday and return on a Tuesday

Cheap 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 September 17, 2025.

Round-trip from

$194
(Booking.com)

One-way from

$84
(Booking.com)

Popular in

March

Cheapest in

April

Average price

$466
From Tucson to Lambert-St Louis
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One-way flight from Tucson to Lambert-St Louis
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Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 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 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 September 17, 2025.

This Frontier deal was found by Cheapflights users on 9/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2511:35 amTUS - STL
1 stop19h 31mFrontier
Wed 10/17:55 pmSTL - TUS
1 stop16h 50mFrontier
Deal found 9/16$144
This Booking.com deal was found by Cheapflights users on 9/17. 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.
Fri 10/1012:24 pmTUS - STL
1 stop6h 40mFrontier
Wed 10/157:52 pmSTL - TUS
1 stop17h 05mFrontier
Deal found 9/17$194
This Booking.com deal was found by Cheapflights users on 9/17. 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 10/1611:42 amTUS - STL
1 stop19h 25mFrontier
Thu 10/232:47 pmSTL - TUS
1 stop22h 52mFrontier
Deal found 9/17$205
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 10/144:47 pmTUS - STL
1 stop5h 37mDelta
Sat 10/255:15 pmSTL - TUS
1 stop7h 15mDelta
Deal found 9/17$287
This American Airlines deal was found by Cheapflights users on 9/17. 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 11/511:30 amTUS - STL
2 stops7h 00mAmerican Airlines
Sat 11/86:03 pmSTL - TUS
1 stop5h 47mAmerican Airlines
Deal found 9/17$292
This Delta deal was found by Cheapflights users on 9/17. 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 10/161:17 pmTUS - STL
1 stop8h 24mDelta
Sat 10/255:15 pmSTL - TUS
1 stop7h 15mDelta
Deal found 9/17$307
This Southwest deal was found by Cheapflights users on 9/17. 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 11/412:00 pmTUS - STL
1 stop6h 45mSouthwest
Thu 11/65:05 amSTL - TUS
1 stop9h 30mSouthwest
Deal found 9/17$312
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Fri 10/103:39 pmTUS - STL
1 stop6h 10mAmerican Airlines
Tue 10/145:20 amSTL - TUS
1 stop5h 34mAmerican Airlines
Deal found 9/16$317
This Southwest deal was found by Cheapflights users on 9/17. 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 10/151:40 pmTUS - STL
1 stop5h 50mSouthwest
Thu 10/235:10 amSTL - TUS
1 stop6h 25mSouthwest
Deal found 9/17$322
This Delta deal was found by Cheapflights users on 9/16. 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 11/136:00 amTUS - STL
1 stop9h 07mDelta
Mon 11/175:12 pmSTL - TUS
1 stop7h 47mDelta
Deal found 9/16$327
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 10/144:47 pmTUS - STL
1 stop5h 37mDelta
Wed 10/223:59 pmSTL - TUS
1 stop8h 31mDelta
Deal found 9/17$333

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 September 17, 2025.
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 10/16

11:42 am-9:07 am

1 stop19h 25m

Lambert-St Louis

Thu 10/23

2:47 pm-11:39 am

1 stop22h 52m

$205

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 10/14

4:47 pm-12:24 am

1 stop5h 37m

Lambert-St Louis

Tue 10/21

2:29 pm-9:25 pm

1 stop8h 56m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 1/28

6:00 pm-12:37 am

1 stop5h 37m

Lambert-St Louis

Wed 2/4

6:00 am-12:24 pm

1 stop7h 24m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 10/15

4:47 pm-12:24 am

1 stop5h 37m

Lambert-St Louis

Sat 10/25

3:59 pm-10:30 pm

1 stop8h 31m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 11/5

5:47 pm-12:24 am

1 stop5h 37m

Lambert-St Louis

Sat 11/8

5:30 pm-10:25 pm

1 stop5h 55m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 10/14

4:47 pm-12:24 am

1 stop5h 37m

Lambert-St Louis

Sat 10/25

5:15 pm-10:30 pm

1 stop7h 15m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 10/15

4:47 pm-12:24 am

1 stop5h 37m

Lambert-St Louis

Tue 10/21

2:29 pm-9:25 pm

1 stop8h 56m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 11/4

2:15 pm-10:04 pm

1 stop6h 49m

Lambert-St Louis

Sat 11/8

3:59 pm-11:30 pm

1 stop8h 31m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 10/14

11:15 am-6:40 pm

1 stop5h 25m

Lambert-St Louis

Fri 10/24

2:29 pm-9:25 pm

1 stop8h 56m

$317

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 10/15

4:47 pm-12:24 am

1 stop5h 37m

Lambert-St Louis

Fri 10/24

2:29 pm-9:25 pm

1 stop8h 56m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 23 results
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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 September 12, 2025.

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, August is the cheapest month in which you can book a flight from Tucson to St. Louis (average of $311). Flying from Tucson to St. Louis in March is currently the most expensive (average of $356). 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 TUS to STL?

Find hourly flight availability from Tucson to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

It’s optimal to fly from Tucson to St. Louis at noon. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight in the afternoon.

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 September 17, 2025.
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
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
7,961 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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 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 and Delta fly from Tucson to St. Louis in about 5h 37m. The time it takes to get you to your destination can typically vary by up to 13h 48m. 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 United Airlines, starting at $263 and $266 round-trip. Users have found that Delta is 66% 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 Frontier, which is currently one of the cheapest options available, starting at $84. Delta flights start at $144 while deals on American Airlines start at $149 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, August is the cheapest month in which you can book a flight from Tucson to St. Louis (average of $311). Flying from Tucson to St. Louis in March is currently the most expensive (average of $356). 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
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$134Average$336FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$263Average$396FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$266Average$445FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$308Average$388FlexibilityNo cancel feeOn-time63%

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