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

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

What airlines fly to St. Louis?

American Airlines, United Airlines and Southwest 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 68% 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 August 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.

$129 Cheap Flights from Tucson to St. Louis in 2025

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Find the cheapest flights from Tucson to St. Louis

Round-trip

One-way

Last minute

Cheap round-trip flights

11:35 am - 9:06 amTUS-STL

19h 31m1 stop

2:38 pm - 1:51 pmSTL-TUS

25h 13m1 stop

$167Frontier

Find Deal

vie., sep. 5 - dom., sep. 7

2:59 pm - 11:57 pmTUS-STL

6h 58m1 stop

5:58 pm - 10:50 pmSTL-TUS

5h 52m1 stop

$262American Airlines

Find Deal

jue., oct. 30 - mié., nov. 5

4:47 pm - 12:24 amTUS-STL

5h 37m1 stop

2:29 pm - 9:25 pmSTL-TUS

8h 56m1 stop

$274Delta

Find Deal

mar., oct. 21 - vie., oct. 24

12:25 pm - 10:20 pmTUS-STL

7h 55m2 stops

6:30 pm - 11:20 pmSTL-TUS

6h 50m1 stop

$279Southwest

Find Deal

mar., oct. 21 - vie., oct. 24

4:00 pm - 12:20 amTUS-STL

7h 20m2 stops

3:15 pm - 7:40 pmSTL-TUS

5h 25m1 stop

$284Southwest

Find Deal

jue., nov. 6 - vie., nov. 14

4:47 pm - 12:24 amTUS-STL

5h 37m1 stop

3:59 pm - 10:26 pmSTL-TUS

8h 27m1 stop

$322Delta

Find Deal

mié., oct. 15 - jue., oct. 23

4:16 pm - 11:53 pmTUS-STL

5h 37m1 stop

6:35 am - 10:43 amSTL-TUS

6h 08m1 stop

$387United Airlines

Find Deal

vie., sep. 12 - dom., sep. 14

6:00 am - 6:50 pmTUS-STL

10h 50m2 stops

6:35 am - 10:43 amSTL-TUS

6h 08m1 stop

$453United Airlines

Find Deal

vie., sep. 12 - dom., sep. 14

10:31 am - 12:03 amTUS-STL

11h 32m2 stops

3:57 pm - 8:30 pmSTL-TUS

30h 33m2 stops

$505Alaska Airlines

Find Deal

mié., oct. 15 - jue., oct. 23

10:31 am - 12:03 amTUS-STL

11h 32m2 stops

3:57 pm - 8:30 pmSTL-TUS

30h 33m2 stops

$529Alaska Airlines

Find Deal

mié., oct. 15 - jue., oct. 23

Alaska Airlines flights from Tucson to St. Louis

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

Alaska Airlines

Oct 15

TUS10:31 amTucson

11h 32m

2 stops

STL12:03 amLambert-St Louis

Oct 23

STL3:57 pmLambert-St Louis

30h 33m

2 stops

TUS8:30 pmTucson

$505

Find similar

Alaska Airlines

Oct 15

TUS10:31 amTucson

11h 32m

2 stops

STL12:03 amLambert-St Louis

Oct 23

STL3:57 pmLambert-St Louis

30h 33m

2 stops

TUS8:30 pmTucson

$529

Find similar

Alaska Airlines

Sep 12

TUS10:06 amTucson

11h 53m

2 stops

STL11:59 pmLambert-St Louis

Sep 14

STL6:30 pmLambert-St Louis

28h 57m

2 stops

TUS9:27 pmTucson

$775

Find similar

American Airlines flights from Tucson to St. Louis

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

American Airlines

Oct 30

TUS2:59 pmTucson

6h 58m

1 stop

STL11:57 pmLambert-St Louis

Nov 5

STL5:58 pmLambert-St Louis

5h 52m

1 stop

TUS10:50 pmTucson

$262

Find similar

American Airlines

Sep 3

TUS11:55 amTucson

6h 30m

1 stop

STL8:25 pmLambert-St Louis

Sep 13

STL8:00 amLambert-St Louis

5h 14m

1 stop

TUS11:14 amTucson

$267

Find similar

American Airlines

Sep 3

TUS10:06 amTucson

8h 09m

2 stops

STL8:15 pmLambert-St Louis

Sep 13

STL6:10 amLambert-St Louis

7h 25m

1 stop

TUS11:35 amTucson

$272

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

vie. 9/5

11:35 am-9:06 am

1 stop19h 31m

Lambert-St Louis

dom. 9/7

2:38 pm-1:51 pm

1 stop25h 13m

$167

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

jue. 10/30

2:59 pm-11:57 pm

1 stop6h 58m

Lambert-St Louis

mié. 11/5

5:58 pm-10:50 pm

1 stop5h 52m

$262

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mar. 10/21

4:47 pm-12:24 am

1 stop5h 37m

Lambert-St Louis

vie. 10/24

2:29 pm-9:25 pm

1 stop8h 56m

$274

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mar. 10/21

12:25 pm-10:20 pm

2 stops7h 55m

Lambert-St Louis

vie. 10/24

6:30 pm-11:20 pm

1 stop6h 50m

$279

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

jue. 11/6

4:00 pm-12:20 am

2 stops7h 20m

Lambert-St Louis

vie. 11/14

3:15 pm-7:40 pm

1 stop5h 25m

$284

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mié. 10/15

4:47 pm-12:24 am

1 stop5h 37m

Lambert-St Louis

jue. 10/23

3:59 pm-10:26 pm

1 stop8h 27m

$322

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

vie. 9/12

4:16 pm-11:53 pm

1 stop5h 37m

Lambert-St Louis

dom. 9/14

6:35 am-10:43 am

1 stop6h 08m

$387

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

vie. 9/12

6:00 am-6:50 pm

2 stops10h 50m

Lambert-St Louis

dom. 9/14

6:35 am-10:43 am

1 stop6h 08m

$453

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mié. 10/15

10:31 am-12:03 am

2 stops11h 32m

Lambert-St Louis

jue. 10/23

3:57 pm-8:30 pm

2 stops30h 33m

$505

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mié. 10/15

10:31 am-12:03 am

2 stops11h 32m

Lambert-St Louis

jue. 10/23

3:57 pm-8:30 pm

2 stops30h 33m

$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 $399 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 $312 on momondo.

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

As of August 2025, prices for Tucson to St. Louis flights are approximately 22% 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 55m.
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 August 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 (68% of total bookings). The next most popular airlines are United Airlines (13%), Southwest (13%), and Delta (6%).

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 $223	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
United Airlines	PriceFrom $266	Free Cancellation	Rating 7.4 8,930 reviews	Search United Airlines flights
American Airlines	PriceFrom $266	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $308	Free Cancellation	Rating 8.0 4,245 reviews	Search Southwest flights

St. Charles

Chesterfield

Fairview Heights

Hermann

Maryland Heights

Florissant

O'Fallon

Fenton

Collinsville

Wentzville

Alton

St. Peters

Festus

Farmington

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.