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

Flying on American Airlines is currently your cheapest option to Tucson, with prices starting at $293. Additional round-trip tickets that might be worth considering are offered by Delta and Southwest, with the lowest prices starting at $319 and $369, respectively. American Airlines is 22% 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 $134 on Delta. Other airlines that offer cheap prices include United Airlines from $139 and American Airlines from $165 one-way.

What is the cheapest day to fly from St. Louis to Tucson?

Travelers seeking maximum savings on their St. Louis to Tucson flight should consider departing on Tuesday at noon when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from St. Louis to Tucson?

American Airlines, Delta and United Airlines are the most popular airlines when flying from St. Louis to Tucson.

What is the cheapest day to fly round-trip from St. Louis to Tucson?

Monday is generally a great day to depart. Flying on this day could help you save up to 52%.

How far in advance should I book a flight from St. Louis to Tucson?

Travelers have found it’s best to book a flight 44 days in advance to save up to 160% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 44 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Tucson 1-2 weeks in advance for as low as $316, or $693 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Tucson?

August can be a great time to fly to Tucson from St. Louis with a flight ticket averaging about $376. Cheapflights users have found deals in the month of August for as cheap as $228. The most expensive prices can be found in the month of March.

Most accurate provider : When it comes to deals on St. Louis-Tucson flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Tucson flight deals on Cheapflights vs. FlightHub >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.

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.

$134+ Flights from St. Louis to Tucson - Compare & Save Big

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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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

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$293 (American Airlines)
One-way from	$134 (Delta)
Popular in	March
Cheapest in	August
Average price	$381

Provider with most accurate pricing for Lambert-St Louis-Tucson flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Tucson flights.

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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).

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Average for round-trip flights in April 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 April 29, 2025.

Thu 6/55:30 amSTL - TUS

1 stop6h 33mAmerican Airlines

Sat 6/142:56 pmTUS - STL

1 stop7h 03mAmerican Airlines

Deal found 4/27

$293

Mon 6/23:40 pmSTL - TUS

1 stop7h 43mDelta

Thu 6/51:10 pmTUS - STL

1 stop8h 28mDelta

Deal found 4/27

$319

Thu 7/35:20 amSTL - TUS

1 stop7h 15mSouthwest

Mon 7/73:00 pmTUS - STL

2 stops7h 35mSouthwest

Deal found 4/27

$369

Tue 5/131:41 pmSTL - TUS

2 stops9h 28mUnited Airlines

Wed 5/214:20 pmTUS - STL

1 stop5h 32mUnited Airlines

Deal found 4/28

$442

Mon 6/25:00 amSTL - TUS

2 stops32h 05mAlaska Airlines

Thu 6/510:33 amTUS - STL

2 stops11h 31mAlaska Airlines

Deal found 4/27

$713

Best flights from St. Louis to Tucson
Discover carefully curated flight deals from St. Louis to Tucson that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2025.

Thu 6/55:30 amSTL - TUS

1 stop6h 33mAmerican Airlines

Sat 6/142:56 pmTUS - STL

1 stop7h 03mAmerican Airlines

Deal found 4/27

$293

Mon 6/23:40 pmSTL - TUS

1 stop7h 43mDelta

Thu 6/51:10 pmTUS - STL

1 stop8h 28mDelta

Deal found 4/27

$319

Thu 7/35:20 amSTL - TUS

1 stop7h 15mSouthwest

Mon 7/73:00 pmTUS - STL

2 stops7h 35mSouthwest

Deal found 4/27

$369

Tue 5/131:41 pmSTL - TUS

2 stops9h 28mUnited Airlines

Wed 5/214:20 pmTUS - STL

1 stop5h 32mUnited Airlines

Deal found 4/28

$442

Mon 6/25:00 amSTL - TUS

2 stops32h 05mAlaska Airlines

Thu 6/510:33 amTUS - STL

2 stops11h 31mAlaska Airlines

Deal found 4/27

$713

Last-minute flights from St. Louis to Tucson
Discover last-minute flight deals from St. Louis to Tucson. Data last updated April 29, 2025 and is based on user searches.

Tue 5/65:32 pmSTL - TUS

1 stop6h 41mDelta

Tue 5/135:50 amTUS - STL

1 stop5h 44mDelta

Deal found 4/27

$527

Tue 5/64:52 pmSTL - TUS

2 stops6h 54mAmerican Airlines

Tue 5/1311:23 amTUS - STL

1 stop6h 06mAmerican Airlines

Deal found 4/27

$532

Sun 5/116:30 amSTL - TUS

2 stops15h 58mAlaska Airlines

Mon 6/2312:06 pmTUS - STL

2 stops25h 38mAlaska Airlines

Deal found 4/27

$909

Mon 5/124:35 pmSTL - TUS

2 stops8h 05mSouthwest

Wed 5/213:30 pmTUS - STL

1 stop5h 45mSouthwest

Deal found 4/28

$422

Tue 5/131:41 pmSTL - TUS

2 stops9h 28mUnited Airlines

Wed 5/214:20 pmTUS - STL

1 stop5h 32mUnited Airlines

Deal found 4/28

$442

Sun 5/256:00 amSTL - TUS

1 stop8h 00mDelta

Sun 6/15:50 amTUS - STL

1 stop5h 44mDelta

Deal found 4/27

$327

Sun 5/259:29 amSTL - TUS

2 stops7h 13mAmerican Airlines

Sun 6/13:21 pmTUS - STL

1 stop6h 37mAmerican Airlines

Deal found 4/27

$332

One-way flights from St. Louis to Tucson
Search for one-way flight options from St. Louis to Tucson. Find affordable one-way fares based on user searches. Data last updated April 29, 2025.

Thu 5/297:05 amSTL - TUS

1 stop6h 55mDelta

Deal found 4/27

$134

Tue 9/231:39 pmSTL - TUS

2 stops9h 13mUnited Airlines

Deal found 4/28

$139

Mon 8/185:15 amSTL - TUS

2 stops8h 01mAmerican Airlines

Deal found 4/27

$165

Thu 5/2910:10 amSTL - TUS

2 stops9h 20mSouthwest

Deal found 4/27

$239

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Tucson that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 6/5

5:30 am-10:03 am

1 stop6h 33m

Tucson

Sat 6/14

2:56 pm-11:59 pm

1 stop7h 03m

$293

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 6/2

3:40 pm-9:23 pm

1 stop7h 43m

Tucson

Thu 6/5

1:10 pm-11:38 pm

1 stop8h 28m

$319

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 7/3

5:20 am-10:35 am

1 stop7h 15m

Tucson

Mon 7/7

3:00 pm-12:35 am

2 stops7h 35m

$369

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 5/13

1:41 pm-9:09 pm

2 stops9h 28m

Tucson

Wed 5/21

4:20 pm-11:52 pm

1 stop5h 32m

$442

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 6/2

5:00 am-11:05 am

2 stops32h 05m

Tucson

Thu 6/5

10:33 am-12:04 am

2 stops11h 31m

$713

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 5/29

7:05 am-12:00 pm

1 stop6h 55m

$134

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 9/23

1:39 pm-8:52 pm

2 stops9h 13m

$139

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 8/18

5:15 am-11:16 am

2 stops8h 01m

$165

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 5/29

10:10 am-5:30 pm

2 stops9h 20m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Compare providers for flights from St. Louis to Tucson

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 April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Tucson flight deals on Cheapflights vs. FlightHub >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?

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 June is currently the most expensive (average of $452). 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?

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.

Rainfall in Tucson by month

In terms of precipitation, rainfall in Tucson ranges from 0.2 - 2.4 inches per month. August is typically the wettest month, when rainfall can reach 2.4 in. May is typically the driest time to visit Tucson when rainfall is around 0.2 in.

Temperature in Tucson by month

If weather is an important factor for your trip to Tucson, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 87.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Tucson

To help decide which airline to fly from St. Louis to Tucson, see what other customers have to say about Alaska Airlines, Southwest and Delta. 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.

Alaska Airlines

8.0

Very good

9,949 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

9,949 reviews

Alaska Airlines

8.0

Very good

9,949 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Southwest

8.0

Very good

4,292 reviews

Alaska Airlines

8.0

Very good

9,949 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,929 reviews

Alaska Airlines

8.0

Very good

9,949 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,696 reviews

Alaska Airlines

8.0

Very good

9,949 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,949 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What are the cheapest airlines flying from St. Louis to Tucson round-trip?
Flying on American Airlines is currently your cheapest option to Tucson, with prices starting at $293. Additional round-trip tickets that might be worth considering are offered by Delta and Southwest, with the lowest prices starting at $319 and $369, respectively. American Airlines is 22% 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 $134 on Delta. Other airlines that offer cheap prices include United Airlines from $139 and American Airlines from $165 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 June is currently the most expensive (average of $452). 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

Sierra Vista

Green Valley

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Alternative routes for St. Louis to Tucson

Other flights to Tucson

Top 4 airlines flying from St. Louis to Tucson

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$278	Average$354	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$286	Average$396	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$316	Average$388	FlexibilityNo cancel fee	On-time63%
Delta	Cheapest$316	Average$417	FlexibilityNo cancel fee	On-timeN/A

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$134+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Tucson with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Tucson

Cheapest flights from St. Louis to TucsonExplore 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 April 29, 2025.

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 April 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Tucson that are best for you.

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 April.

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.

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 April 25, 2025.

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

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 April 29, 2025.

Rainfall in Tucson by month

Plan your trip to Tucson by taking into account the average rainfall totals by month.

Temperature in Tucson by month

Plan your trip to Tucson by taking into account the average temperature totals by month.

Reviews of airlines servicing Tucson

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?

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

Can I find deals for flights from St. Louis to Tucson that include hotel bookings?

How can I find direct flights from St. Louis to Tucson?

Can I find deals for business class flights from St. Louis to Tucson?

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

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Alternative routes for St. Louis to Tucson

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Top 4 airlines flying from St. Louis to Tucson

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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 April 29, 2025.