What airlines fly to St. Louis?

American Airlines, Southwest and United Airlines are the top three most popular airlines that fly to St. Louis from Tucson according to our data. American Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Tucson to Lambert-St Louis?

Frontier is the most popular carrier operating from Tucson to Lambert-St Louis

When did momondo last update prices for flights from Tucson Airport to Lambert-St Louis Airport?

Prices for flights from Tucson Airport to Lambert-St Louis Airport were last updated today.

How many operators does momondo search for flights from Tucson Airport to Lambert-St Louis Airport?

As of January 2026, there are 4 operators available to choose from for flights from Tucson Airport to Lambert-St Louis Airport.

How old do you have to be to fly from Tucson Airport to Lambert-St Louis Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Tucson Airport to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$78 Cheap Flights from Tucson to St. Louis in 2026

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Find the cheapest flights from Tucson to St. Louis

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

1:20 pm - 9:26 pm

TUS

STL

7h 06m

1 stop

6:41 pm - 1:23 pm

STL

TUS

19h 42m

1 stop

$244Frontier

Thu, Feb 19 - Sat, Feb 21

1:20 pm - 9:26 pm

TUS

STL

7h 06m

1 stop

6:41 pm - 1:23 pm

STL

TUS

19h 42m

1 stop

$254Frontier

Thu, Feb 19 - Sat, Feb 21

7:42 pm - 9:26 pm

TUS

STL

24h 44m

2 stops

6:41 pm - 1:23 pm

STL

TUS

19h 42m

1 stop

$265Frontier

Thu, Feb 19 - Sat, Feb 21

1:20 pm - 1:09 pm

TUS

STL

22h 49m

2 stops

6:41 pm - 1:23 pm

STL

TUS

19h 42m

1 stop

$271Frontier

Thu, Feb 19 - Sat, Feb 21

7:10 am - 3:38 pm

TUS

STL

7h 28m

1 stop

4:30 pm - 9:31 pm

STL

TUS

6h 01m

1 stop

$287United Airlines

Wed, Feb 25 - Sat, Feb 28

1:33 pm - 9:26 pm

TUS

STL

6h 53m

1 stop

3:49 pm - 4:57 pm

STL

TUS

50h 08m

2 stops

$311Frontier

Fri, Feb 13 - Tue, Feb 17

7:10 am - 3:38 pm

TUS

STL

7h 28m

1 stop

7:41 am - 4:44 pm

STL

TUS

10h 03m

2 stops

$314United Airlines

Wed, Feb 25 - Sat, Feb 28

12:57 pm - 7:29 pm

TUS

STL

5h 32m

1 stop

4:13 pm - 8:56 pm

STL

TUS

5h 43m

1 stop

$323American Airlines

Thu, Feb 19 - Sat, Feb 21

6:30 am - 1:14 pm

TUS

STL

5h 44m

1 stop

7:41 am - 4:44 pm

STL

TUS

10h 03m

2 stops

$328United Airlines

Thu, Feb 19 - Sat, Feb 21

4:03 pm - 11:59 pm

TUS

STL

6h 56m

1 stop

5:12 am - 9:45 am

STL

TUS

5h 33m

1 stop

$331American Airlines

Wed, Feb 25 - Sun, Mar 1

Delta flights from Tucson to St. Louis

Our best Delta deals on Tucson to St. Louis flight tickets

Delta

Apr 25

TUS7:10 amTucson

5h 30m

1 stop

STL2:40 pmLambert-St Louis

Apr 28

STL6:00 amLambert-St Louis

7h 39m

1 stop

TUS11:39 amTucson

$351

Delta

Feb 20

TUS8:05 amTucson

8h 37m

1 stop

STL5:42 pmLambert-St Louis

Feb 23

STL3:47 pmLambert-St Louis

8h 14m

1 stop

TUS11:01 pmTucson

$393

Delta

Apr 23

TUS7:10 amTucson

8h 16m

1 stop

STL5:26 pmLambert-St Louis

Apr 26

STL2:20 pmLambert-St Louis

9h 11m

1 stop

TUS9:31 pmTucson

$447

American Airlines flights from Tucson to St. Louis

Our best American Airlines deals on Tucson to St. Louis flight tickets

American Airlines

Feb 19

TUS12:57 pmTucson

5h 32m

1 stop

STL7:29 pmLambert-St Louis

Feb 21

STL4:13 pmLambert-St Louis

5h 43m

1 stop

TUS8:56 pmTucson

$323

American Airlines

Feb 25

TUS4:03 pmTucson

6h 56m

1 stop

STL11:59 pmLambert-St Louis

Mar 1

STL5:12 amLambert-St Louis

5h 33m

1 stop

TUS9:45 amTucson

$331

American Airlines

May 12

TUS3:51 pmTucson

5h 13m

1 stop

STL11:04 pmLambert-St Louis

May 26

STL6:00 amLambert-St Louis

7h 36m

1 stop

TUS11:36 amTucson

$341

Fly from

Fly to

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

$244

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

$254

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 2/19

7:42 pm-9:26 pm

2 stops24h 44m

Lambert-St Louis

Sat 2/21

6:41 pm-1:23 pm

1 stop19h 42m

$265

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 2/19

1:20 pm-1:09 pm

2 stops22h 49m

Lambert-St Louis

Sat 2/21

6:41 pm-1:23 pm

1 stop19h 42m

$271

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 2/25

7:10 am-3:38 pm

1 stop7h 28m

Lambert-St Louis

Sat 2/28

4:30 pm-9:31 pm

1 stop6h 01m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 2/13

1:33 pm-9:26 pm

1 stop6h 53m

Lambert-St Louis

Tue 2/17

3:49 pm-4:57 pm

2 stops50h 08m

$311

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 2/25

7:10 am-3:38 pm

1 stop7h 28m

Lambert-St Louis

Sat 2/28

7:41 am-4:44 pm

2 stops10h 03m

$314

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 2/19

12:57 pm-7:29 pm

1 stop5h 32m

Lambert-St Louis

Sat 2/21

4:13 pm-8:56 pm

1 stop5h 43m

$323

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 2/19

6:30 am-1:14 pm

1 stop5h 44m

Lambert-St Louis

Sat 2/21

7:41 am-4:44 pm

2 stops10h 03m

$328

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 2/25

4:03 pm-11:59 pm

1 stop6h 56m

Lambert-St Louis

Sun 3/1

5:12 am-9:45 am

1 stop5h 33m

$331

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Tucson to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

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

In general, February is the cheapest month to fly from Tucson to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $301. The month of April is another great option to travel to St. Louis, with average flight prices from Tucson averaging around $316.

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

You are more likely to see cheaper flights to St. Louis from Tucson when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $384 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Tucson for as low as $315 on momondo.

How have Tucson to St. Louis flight prices changed over time?

As of January 2026, prices for Tucson to St. Louis flights are approximately 23% more expensive when compared to flights at the same time last year.

When to book flights from Tucson to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Tucson to St. Louis according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Tucson to St. Louis (TUS to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Tucson to St. Louis

Fastest flight time	4h 59m
Direct flights	None

The fastest flight from Tucson to St. Louis takes 4h 59m

There are no direct flights from Tucson to St. Louis. There are no popular flight routes from Tucson to St. Louis.

Search flight deals

How far is Tucson to Lambert-St Louis by plane?
The distance between Tucson and Lambert-St Louis is about 1245.9 mi. A reasonable flight in good conditions will take 4h 59m.
When did momondo last update prices for flights from Tucson Airport to Lambert-St Louis Airport?
Prices for flights from Tucson Airport to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from Tucson Airport to Lambert-St Louis Airport?
As of January 2026, there are 4 operators available to choose from for flights from Tucson Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Tucson Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Tucson Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Tucson to St. Louis?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Tucson to St. Louis is American Airlines (54% of total bookings). The next most popular airlines are Southwest (23%), United Airlines (16%), and Delta (7%).

Best airlines flying from Tucson to St. Louis

Compare and see reviews for airlines that fly from Tucson to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $134	Free Cancellation	Rating 7.9 8,128 reviews	Search Delta flights
American Airlines	PriceFrom $214	Free Cancellation	Rating 7.2 11,205 reviews	Search American Airlines flights
Southwest	PriceFrom $264	Free Cancellation	Rating 8.0 4,267 reviews	Search Southwest flights
United Airlines	PriceFrom $266	Free Cancellation	Rating 7.4 9,215 reviews	Search United Airlines flights

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Chesterfield

Hermann

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Maryland Heights

Florissant

O'Fallon

Collinsville

Fenton

St. Peters

Wentzville

Alton

Farmington

Clayton

Edwardsville

Eureka

Festus

Glencoe

Litchfield

Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Tucson to St. Louis?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Tucson to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Tucson to St. Louis with flexible booking policies on momondo?

Flights from Tucson to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Tucson to St. Louis?

Once all potential Tucson to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Tucson to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Tucson to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.