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 63% 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, Delta, and American Airlines are the most popular carriers 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 September 2025, 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.

$84 Cheap Flights from Tucson to St. Louis in 2025/26

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Find the cheapest flights from Tucson to St. Louis

Round-trip

One-way

Last minute

Cheap round-trip flights

11:42 am - 9:07 amTUS-STL

19h 25m1 stop

2:47 pm - 11:39 amSTL-TUS

22h 52m1 stop

$205Frontier

Find Deal

Thu, Oct 16 - Thu, Oct 23

7:00 am - 4:10 pmTUS-STL

8h 10m1 stop

5:30 pm - 10:25 pmSTL-TUS

5h 55m1 stop

$287Delta

Find Deal

Tue, Nov 4 - Sat, Nov 8

5:35 am - 2:45 pmTUS-STL

7h 10m2 stops

5:40 am - 10:35 amSTL-TUS

6h 55m1 stop

$292Southwest

Find Deal

Wed, Oct 22 - Wed, Oct 29

5:35 am - 2:45 pmTUS-STL

7h 10m2 stops

5:05 pm - 10:30 pmSTL-TUS

7h 25m2 stops

$297Southwest

Find Deal

Wed, Oct 22 - Wed, Oct 29

3:39 pm - 11:49 pmTUS-STL

6h 10m1 stop

5:20 am - 8:54 amSTL-TUS

5h 34m1 stop

$317American Airlines

Find Deal

Fri, Oct 10 - Tue, Oct 14

2:38 pm - 10:58 pmTUS-STL

7h 20m2 stops

7:00 am - 12:19 pmSTL-TUS

6h 19m1 stop

$322American Airlines

Find Deal

Tue, Nov 4 - Sat, Nov 8

4:25 pm - 11:58 pmTUS-STL

5h 33m1 stop

11:10 am - 8:25 pmSTL-TUS

11h 15m2 stops

$372United Airlines

Find Deal

Tue, Oct 14 - Tue, Oct 21

10:57 am - 6:57 pmTUS-STL

6h 00m1 stop

9:20 am - 8:25 pmSTL-TUS

13h 05m2 stops

$392United Airlines

Find Deal

Thu, Oct 16 - Tue, Oct 21

7:30 am - 3:18 pmTUS-STL

30h 48m2 stops

7:00 am - 10:44 amSTL-TUS

28h 44m2 stops

$483Alaska Airlines

Find Deal

Wed, Nov 5 - Sat, Nov 8

7:30 am - 3:18 pmTUS-STL

30h 48m2 stops

7:00 am - 10:44 amSTL-TUS

28h 44m2 stops

$529Alaska Airlines

Find Deal

Tue, Nov 4 - Sat, Nov 8

American Airlines flights from Tucson to St. Louis

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

American Airlines

Oct 10

TUS3:39 pmTucson

6h 10m

1 stop

STL11:49 pmLambert-St Louis

Oct 14

STL5:20 amLambert-St Louis

5h 34m

1 stop

TUS8:54 amTucson

$317

Find similar

American Airlines

Nov 4

TUS2:38 pmTucson

7h 20m

2 stops

STL10:58 pmLambert-St Louis

Nov 8

STL7:00 amLambert-St Louis

6h 19m

1 stop

TUS12:19 pmTucson

$322

Find similar

American Airlines

Oct 15

TUS1:56 pmTucson

4h 31m

1 stop

STL8:27 pmLambert-St Louis

Oct 23

STL7:16 amLambert-St Louis

6h 50m

1 stop

TUS12:06 pmTucson

$352

Find similar

Delta flights from Tucson to St. Louis

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

Delta

Nov 4

TUS7:00 amTucson

8h 10m

1 stop

STL4:10 pmLambert-St Louis

Nov 8

STL5:30 pmLambert-St Louis

5h 55m

1 stop

TUS10:25 pmTucson

$287

Find similar

Delta

Oct 16

TUS1:17 pmTucson

8h 24m

1 stop

STL11:41 pmLambert-St Louis

Oct 25

STL5:15 pmLambert-St Louis

7h 15m

1 stop

TUS10:30 pmTucson

$307

Find similar

Delta

Nov 13

TUS6:00 amTucson

9h 07m

1 stop

STL4:07 pmLambert-St Louis

Nov 17

STL5:12 pmLambert-St Louis

7h 47m

1 stop

TUS11:59 pmTucson

$327

Find similar

Fly from

Fly to

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 11/4

7:00 am-4:10 pm

1 stop8h 10m

Lambert-St Louis

Sat 11/8

5:30 pm-10:25 pm

1 stop5h 55m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 10/22

5:35 am-2:45 pm

2 stops7h 10m

Lambert-St Louis

Wed 10/29

5:40 am-10:35 am

1 stop6h 55m

$292

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 10/22

5:35 am-2:45 pm

2 stops7h 10m

Lambert-St Louis

Wed 10/29

5:05 pm-10:30 pm

2 stops7h 25m

$297

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 10/10

3:39 pm-11:49 pm

1 stop6h 10m

Lambert-St Louis

Tue 10/14

5:20 am-8:54 am

1 stop5h 34m

$317

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 11/4

2:38 pm-10:58 pm

2 stops7h 20m

Lambert-St Louis

Sat 11/8

7:00 am-12:19 pm

1 stop6h 19m

$322

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 10/14

4:25 pm-11:58 pm

1 stop5h 33m

Lambert-St Louis

Tue 10/21

11:10 am-8:25 pm

2 stops11h 15m

$372

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 10/16

10:57 am-6:57 pm

1 stop6h 00m

Lambert-St Louis

Tue 10/21

9:20 am-8:25 pm

2 stops13h 05m

$392

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 11/5

7:30 am-3:18 pm

2 stops30h 48m

Lambert-St Louis

Sat 11/8

7:00 am-10:44 am

2 stops28h 44m

$483

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 11/4

7:30 am-3:18 pm

2 stops30h 48m

Lambert-St Louis

Sat 11/8

7:00 am-10:44 am

2 stops28h 44m

$529

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, April 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 $316. The month of January is another great option to travel to St. Louis, with average flight prices from Tucson averaging around $328.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $377. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $615. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Tucson at noon is the least expensive time of day to depart. momondo users have found prices as low as $388 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $431 per ticket.

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 $404 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 $325 on momondo.

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

As of September 2025, prices for Tucson to St. Louis flights are approximately 23% cheaper 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

Direct flights	None

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 31m.
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 September 2025, 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 (63% of total bookings). The next most popular airlines are Southwest (16%), United Airlines (14%), 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 7,961 reviews	Search Delta flights
American Airlines	PriceFrom $263	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $266	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Southwest	PriceFrom $308	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights

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Florissant

Maryland Heights

O'Fallon

Fenton

Collinsville

Wentzville

Alton

St. Peters

Farmington

Festus

Glencoe

Clayton

Edwardsville

Eureka

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.