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

United Airlines, American Airlines, and Alaska Airlines are the most popular carriers operating from Tucson to Lambert-St Louis

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.

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 November 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.

$139 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:43 pm - 9:25 pmTUS-STL

24h 42m1 stop

10:10 pm - 6:58 pmSTL-TUS

21h 48m1 stop

$139Frontier

Find Deal

dom., dic. 28 - sáb., ene. 3

12:24 pm - 9:38 pmTUS-STL

8h 14m1 stop

9:59 am - 4:22 pmSTL-TUS

7h 23m1 stop

$287Delta

Find Deal

mié., ene. 28 - mié., feb. 4

2:33 pm - 8:57 pmTUS-STL

5h 24m1 stop

6:30 am - 3:51 pmSTL-TUS

10h 21m2 stops

$333United Airlines

Find Deal

mar., dic. 2 - sáb., dic. 6

1:42 pm - 8:37 pmTUS-STL

5h 55m1 stop

2:38 pm - 10:27 pmSTL-TUS

8h 49m1 stop

$337Delta

Find Deal

mar., ene. 20 - dom., feb. 8

1:32 pm - 11:38 pmTUS-STL

9h 06m1 stop

6:00 am - 12:22 pmSTL-TUS

7h 22m1 stop

$347Delta

Find Deal

mié., feb. 25 - dom., mar. 1

2:35 pm - 10:47 pmTUS-STL

7h 12m1 stop

5:16 am - 9:40 amSTL-TUS

5h 24m1 stop

$353American Airlines

Find Deal

mar., dic. 16 - mar., dic. 23

4:29 pm - 1:54 pmTUS-STL

20h 25m1 stop

2:50 pm - 5:28 pmSTL-TUS

27h 38m2 stops

$357Alaska Airlines

Find Deal

mié., ene. 28 - mié., feb. 4

6:25 am - 2:43 pmTUS-STL

7h 18m2 stops

11:55 am - 4:10 pmSTL-TUS

5h 15m1 stop

$358American Airlines

Find Deal

mié., ene. 28 - mié., feb. 4

7:30 am - 1:54 pmTUS-STL

29h 24m2 stops

2:50 pm - 5:28 pmSTL-TUS

27h 38m2 stops

$363Alaska Airlines

Find Deal

mié., ene. 28 - mié., feb. 4

3:03 pm - 1:54 pmTUS-STL

21h 51m2 stops

2:50 pm - 5:28 pmSTL-TUS

27h 38m2 stops

$365Alaska Airlines

Find Deal

mié., ene. 28 - mié., feb. 4

United Airlines flights from Tucson to St. Louis

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

United Airlines

Dec 2

TUS9:53 amTucson

5h 35m

1 stop

STL4:28 pmLambert-St Louis

Dec 6

STL6:30 amLambert-St Louis

7h 00m

1 stop

TUS12:30 pmTucson

$287

Find similar

United Airlines

Dec 2

TUS2:33 pmTucson

5h 24m

1 stop

STL8:57 pmLambert-St Louis

Dec 6

STL6:30 amLambert-St Louis

10h 21m

2 stops

TUS3:51 pmTucson

$333

Find similar

United Airlines

Jan 8

TUS10:41 amTucson

11h 17m

2 stops

STL10:58 pmLambert-St Louis

Jan 11

STL8:05 amLambert-St Louis

9h 32m

2 stops

TUS4:37 pmTucson

$537

Find similar

American Airlines flights from Tucson to St. Louis

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

American Airlines

Dec 16

TUS2:35 pmTucson

7h 12m

1 stop

STL10:47 pmLambert-St Louis

Dec 23

STL5:16 amLambert-St Louis

5h 24m

1 stop

TUS9:40 amTucson

$353

Find similar

American Airlines

Jan 28

TUS6:25 amTucson

7h 18m

2 stops

STL2:43 pmLambert-St Louis

Feb 4

STL11:55 amLambert-St Louis

5h 15m

1 stop

TUS4:10 pmTucson

$358

Find similar

American Airlines

Dec 19

TUS4:34 pmTucson

5h 24m

1 stop

STL10:58 pmLambert-St Louis

Jan 4

STL2:43 pmLambert-St Louis

7h 17m

1 stop

TUS9:00 pmTucson

$413

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

dom. 12/28

7:43 pm-9:25 pm

1 stop24h 42m

Lambert-St Louis

sáb. 1/3

10:10 pm-6:58 pm

1 stop21h 48m

$139

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mié. 1/28

12:24 pm-9:38 pm

1 stop8h 14m

Lambert-St Louis

mié. 2/4

9:59 am-4:22 pm

1 stop7h 23m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mar. 12/2

2:33 pm-8:57 pm

1 stop5h 24m

Lambert-St Louis

sáb. 12/6

6:30 am-3:51 pm

2 stops10h 21m

$333

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mar. 1/20

1:42 pm-8:37 pm

1 stop5h 55m

Lambert-St Louis

dom. 2/8

2:38 pm-10:27 pm

1 stop8h 49m

$337

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mié. 2/25

1:32 pm-11:38 pm

1 stop9h 06m

Lambert-St Louis

dom. 3/1

6:00 am-12:22 pm

1 stop7h 22m

$347

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mar. 12/16

2:35 pm-10:47 pm

1 stop7h 12m

Lambert-St Louis

mar. 12/23

5:16 am-9:40 am

1 stop5h 24m

$353

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mié. 1/28

4:29 pm-1:54 pm

1 stop20h 25m

Lambert-St Louis

mié. 2/4

2:50 pm-5:28 pm

2 stops27h 38m

$357

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mié. 1/28

6:25 am-2:43 pm

2 stops7h 18m

Lambert-St Louis

mié. 2/4

11:55 am-4:10 pm

1 stop5h 15m

$358

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mié. 1/28

7:30 am-1:54 pm

2 stops29h 24m

Lambert-St Louis

mié. 2/4

2:50 pm-5:28 pm

2 stops27h 38m

$363

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mié. 1/28

3:03 pm-1:54 pm

2 stops21h 51m

Lambert-St Louis

mié. 2/4

2:50 pm-5:28 pm

2 stops27h 38m

$365

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 November 2025, prices for Tucson to St. Louis flights are approximately 2% 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 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 November 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 (19%), United Airlines (17%), 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 8,003 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 4,248 reviews	Search Southwest flights
United Airlines	PriceFrom $266	Free Cancellation	Rating 7.4 9,019 reviews	Search United Airlines flights

St. Charles

Chesterfield

Hermann

Fairview Heights

Florissant

Maryland Heights

O'Fallon

Wentzville

Fenton

Collinsville

St. Peters

Alton

Farmington

Festus

Glencoe

Edwardsville

Clayton

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.