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 $317. Additional round-trip tickets that might be worth considering are offered by Southwest and Delta, with the lowest prices starting at $333 and $352, respectively. American Airlines is 18% cheaper than the average price of flights available within the next 90 days to this destination.

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, United Airlines and Southwest 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 55 days in advance to save up to 144% 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 55 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 $388. 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 June.

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 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 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.

$269+ Save on Flights from St. Louis to Tucson

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from St. Louis to Tucson with Cheapflights

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to Tucson are usually found in August or November, booked 80 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	FlightHub 3 stars
Round-trip from	$317 (American Airlines)
One-way from	$269 (American Airlines)
Popular in	June
Cheapest in	August
Average price	$421

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. 10% potential increase in price ($46 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

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 March 25, 2025.

Thu 6/55:30 amSTL - TUS

1 stop6h 33mAmerican Airlines

Sat 6/145:00 amTUS - STL

1 stop7h 28mAmerican Airlines

Deal found 3/25

$317

Thu 4/175:35 amSTL - TUS

1 stop9h 10mSouthwest

Mon 4/216:40 pmTUS - STL

2 stops14h 50mSouthwest

Deal found 3/23

$333

Sun 5/255:00 pmSTL - TUS

1 stop6h 49mDelta

Sun 6/16:00 amTUS - STL

1 stop6h 38mDelta

Deal found 3/24

$352

Tue 4/810:40 amSTL - TUS

2 stops8h 26mUnited Airlines

Sat 4/126:00 amTUS - STL

1 stop4h 47mUnited Airlines

Deal found 3/24

$452

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 March 25, 2025.

Thu 6/55:30 amSTL - TUS

1 stop6h 33mAmerican Airlines

Sat 6/145:00 amTUS - STL

1 stop7h 28mAmerican Airlines

Deal found 3/25

$317

Thu 4/175:35 amSTL - TUS

1 stop9h 10mSouthwest

Mon 4/216:40 pmTUS - STL

2 stops14h 50mSouthwest

Deal found 3/23

$333

Sun 5/255:00 pmSTL - TUS

1 stop6h 49mDelta

Sun 6/16:00 amTUS - STL

1 stop6h 38mDelta

Deal found 3/24

$352

Tue 4/810:40 amSTL - TUS

2 stops8h 26mUnited Airlines

Sat 4/126:00 amTUS - STL

1 stop4h 47mUnited Airlines

Deal found 3/24

$452

Last-minute flights from St. Louis to Tucson
Discover last-minute flight deals from St. Louis to Tucson. Data last updated March 25, 2025 and is based on user searches.

Tue 4/17:10 amSTL - TUS

1 stop8h 54mDelta

Sun 4/66:00 amTUS - STL

1 stop7h 37mDelta

Deal found 3/23

$492

Tue 4/110:15 amSTL - TUS

2 stops7h 30mSouthwest

Sun 4/66:15 pmTUS - STL

1 stop4h 35mSouthwest

Deal found 3/23

$497

Fri 4/46:15 amSTL - TUS

1 stop6h 44mUnited Airlines

Fri 4/44:25 pmTUS - STL

1 stop18h 22mUnited Airlines

Deal found 3/24

$694

Fri 4/45:26 amSTL - TUS

1 stop6h 55mAmerican Airlines

Fri 4/41:48 pmTUS - STL

2 stops6h 40mAmerican Airlines

Deal found 3/24

$704

Tue 4/810:40 amSTL - TUS

2 stops8h 26mUnited Airlines

Sat 4/126:00 amTUS - STL

1 stop4h 47mUnited Airlines

Deal found 3/24

$452

Thu 4/176:00 amSTL - TUS

1 stop7h 20mDelta

Mon 4/215:14 pmTUS - STL

1 stop5h 28mDelta

Deal found 3/23

$317

Thu 4/175:35 amSTL - TUS

1 stop9h 10mSouthwest

Mon 4/216:40 pmTUS - STL

2 stops14h 50mSouthwest

Deal found 3/23

$333

Thu 4/245:26 amSTL - TUS

1 stop5h 11mAmerican Airlines

Sun 4/273:06 pmTUS - STL

1 stop6h 44mAmerican Airlines

Deal found 3/23

$338

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 March 25, 2025.

Tue 4/13:53 pmSTL - TUS

1 stop7h 45mAmerican Airlines

Deal found 3/24

$269

Tue 4/110:40 amSTL - TUS

2 stops8h 26mUnited Airlines

Deal found 3/24

$314

Thu 4/39:20 amSTL - TUS

3 stops34h 38mMultiple Airlines

Deal found 3/24

$390

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

5:00 am-2:28 pm

1 stop7h 28m

$317

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 4/17

5:35 am-12:45 pm

1 stop9h 10m

Tucson

Mon 4/21

6:40 pm-11:30 am

2 stops14h 50m

$333

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sun 5/25

5:00 pm-9:49 pm

1 stop6h 49m

Tucson

Sun 6/1

6:00 am-2:38 pm

1 stop6h 38m

$352

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/8

10:40 am-5:06 pm

2 stops8h 26m

Tucson

Sat 4/12

6:00 am-12:47 pm

1 stop4h 47m

$452

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/1

3:53 pm-9:38 pm

1 stop7h 45m

$269

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/1

10:40 am-5:06 pm

2 stops8h 26m

$314

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 4/3

9:20 am-5:58 pm

3 stops34h 38m

$390

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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 March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	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 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 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 80 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 $465). 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 Southwest, Delta and United Airlines. 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

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.0

Very good

4,272 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,890 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,605 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $317. Additional round-trip tickets that might be worth considering are offered by Southwest and Delta, with the lowest prices starting at $333 and $352, respectively. American Airlines is 18% 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, 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 $465). 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

Browse thousands of different options on Cheapflights for your next trip

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$285	Average$364	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$286	Average$389	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$316	Average$393	FlexibilityNo cancel fee	On-time63%
Delta	Cheapest$316	Average$416	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$269+ 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 4/1. 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 80 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 March 25, 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 March 25, 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 March.

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 March 21, 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 March 25, 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?

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?

Traveling to a place near St. Louis?

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.

Alternative routes for St. Louis to Tucson

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from St. Louis to Tucson

100% Free

Book with Flexibility

Travel Smart

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 March 25, 2025.