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 59% 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 and Southwest 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 December 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.

$126 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

Enter your travel dates to find the best prices.

4:05 pm - 12:05 amTUS-STL

7h 00m1 stop

5:55 pm - 11:04 pmSTL-TUS

6h 09m1 stop

$201American Airlines

Find Deal

qui, fev 19 - seg, fev 23

5:56 pm - 12:05 amTUS-STL

5h 09m1 stop

2:26 pm - 7:33 pmSTL-TUS

6h 07m1 stop

$223American Airlines

Find Deal

sex, fev 20 - seg, fev 23

6:00 am - 2:47 pmTUS-STL

7h 47m1 stop

6:00 am - 12:04 pmSTL-TUS

7h 04m1 stop

$246American Airlines

Find Deal

sex, jan 16 - sex, jan 23

3:55 pm - 11:35 pmTUS-STL

6h 40m1 stop

3:00 pm - 11:05 pmSTL-TUS

9h 05m2 stops

$247Southwest

Find Deal

qui, fev 19 - seg, fev 23

5:25 am - 11:20 amTUS-STL

4h 55m1 stop

2:35 pm - 10:25 pmSTL-TUS

8h 50m1 stop

$258Southwest

Find Deal

qua, dez 31 - qua, jan 7

1:32 pm - 2:48 pmTUS-STL

24h 16m1 stop

8:22 pm - 4:34 pmSTL-TUS

45h 12m2 stops

$260Frontier

Find Deal

sex, jan 16 - sex, jan 23

12:54 pm - 7:29 pmTUS-STL

5h 35m1 stop

11:05 am - 9:35 pmSTL-TUS

11h 30m1 stop

$267American Airlines

Find Deal

qui, jan 29 - dom, fev 1

2:55 pm - 9:32 amTUS-STL

17h 37m2 stops

6:10 am - 2:04 pmSTL-TUS

32h 54m2 stops

$276Delta

Find Deal

ter, fev 24 - sáb, fev 28

5:25 am - 11:20 amTUS-STL

4h 55m1 stop

1:10 pm - 8:50 pmSTL-TUS

8h 40m2 stops

$283Southwest

Find Deal

qua, dez 31 - qua, jan 7

12:24 pm - 9:38 pmTUS-STL

8h 14m1 stop

2:38 pm - 10:37 pmSTL-TUS

8h 59m1 stop

$287Delta

Find Deal

qua, jan 28 - qua, fev 4

Delta flights from Tucson to St. Louis

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

Delta

Feb 24

TUS2:55 pmTucson

17h 37m

2 stops

STL9:32 amLambert-St Louis

Feb 28

STL6:10 amLambert-St Louis

32h 54m

2 stops

TUS2:04 pmTucson

$276

Find similar

Delta

Jan 28

TUS12:24 pmTucson

8h 14m

1 stop

STL9:38 pmLambert-St Louis

Feb 4

STL2:38 pmLambert-St Louis

8h 59m

1 stop

TUS10:37 pmTucson

$287

Find similar

Delta

Feb 22

TUS4:06 pmTucson

6h 30m

1 stop

STL11:36 pmLambert-St Louis

Mar 2

STL3:47 pmLambert-St Louis

8h 14m

1 stop

TUS11:01 pmTucson

$332

Find similar

Alaska Airlines flights from Tucson to St. Louis

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

Alaska Airlines

Jan 29

TUS7:30 amTucson

29h 24m

2 stops

STL1:54 pmLambert-St Louis

Feb 1

STL2:50 pmLambert-St Louis

27h 38m

2 stops

TUS5:28 pmTucson

$353

Find similar

Alaska Airlines

Jan 29

TUS7:30 amTucson

29h 24m

2 stops

STL1:54 pmLambert-St Louis

Feb 1

STL2:50 pmLambert-St Louis

27h 38m

2 stops

TUS5:28 pmTucson

$355

Find similar

Alaska Airlines

Jan 29

TUS6:00 amTucson

30h 54m

1 stop

STL1:54 pmLambert-St Louis

Feb 1

STL2:50 pmLambert-St Louis

27h 38m

2 stops

TUS5:28 pmTucson

$357

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

qui 2/19

4:05 pm-12:05 am

1 stop7h 00m

Lambert-St Louis

seg 2/23

5:55 pm-11:04 pm

1 stop6h 09m

$201

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

sex 2/20

5:56 pm-12:05 am

1 stop5h 09m

Lambert-St Louis

seg 2/23

2:26 pm-7:33 pm

1 stop6h 07m

$223

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

sex 1/16

6:00 am-2:47 pm

1 stop7h 47m

Lambert-St Louis

sex 1/23

6:00 am-12:04 pm

1 stop7h 04m

$246

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

qui 2/19

3:55 pm-11:35 pm

1 stop6h 40m

Lambert-St Louis

seg 2/23

3:00 pm-11:05 pm

2 stops9h 05m

$247

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

qua 12/31

5:25 am-11:20 am

1 stop4h 55m

Lambert-St Louis

qua 1/7

2:35 pm-10:25 pm

1 stop8h 50m

$258

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

sex 1/16

1:32 pm-2:48 pm

1 stop24h 16m

Lambert-St Louis

sex 1/23

8:22 pm-4:34 pm

2 stops45h 12m

$260

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

qui 1/29

12:54 pm-7:29 pm

1 stop5h 35m

Lambert-St Louis

dom 2/1

11:05 am-9:35 pm

1 stop11h 30m

$267

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

ter 2/24

2:55 pm-9:32 am

2 stops17h 37m

Lambert-St Louis

sáb 2/28

6:10 am-2:04 pm

2 stops32h 54m

$276

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

qua 12/31

5:25 am-11:20 am

1 stop4h 55m

Lambert-St Louis

qua 1/7

1:10 pm-8:50 pm

2 stops8h 40m

$283

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

qua 1/28

12:24 pm-9:38 pm

1 stop8h 14m

Lambert-St Louis

qua 2/4

2:38 pm-10:37 pm

1 stop8h 59m

$287

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 October is another great option to travel to St. Louis, with average flight prices from Tucson averaging around $321.

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 $398 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 $339 on momondo.

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

As of December 2025, prices for Tucson to St. Louis flights are approximately 4% 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 39m
Direct flights	None

The fastest flight from Tucson to St. Louis takes 4h 39m

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

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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 32m.
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 December 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 (59% of total bookings). The next most popular airlines are Southwest (20%), United Airlines (16%), and Delta (5%).

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 8,011 reviews	Search Delta flights
American Airlines	PriceFrom $242	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights
Southwest	PriceFrom $266	Free Cancellation	Rating 8.0 4,253 reviews	Search Southwest flights
United Airlines	PriceFrom $266	Free Cancellation	Rating 7.4 9,063 reviews	Search United Airlines flights

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Chesterfield

Hermann

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Maryland Heights

O'Fallon

Florissant

Fenton

Wentzville

Collinsville

St. Peters

Alton

Farmington

Clayton

Festus

Glencoe

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.