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

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

What airlines fly to Tucson?

American Airlines, Southwest and United Airlines are the top three most popular airlines that fly to Tucson from St. Louis according to our data. American Airlines is the first choice among our users, with 67% of people opting to fly with this airline when traveling to Tucson. Keep in mind that there are 4 different airlines that fly to Tucson on a routine basis, so you have a few additional options to choose from.

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

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

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

The number of operators available for flights from Lambert-St Louis Airport to Tucson Airport is 4 as of December 2025.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Tucson Airport.

What documentation or ID do you need to fly to Tucson Airport?

The travel and health documents you'll need for your trip to Tucson Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Tucson Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$118 Cheap Flights from St. Louis to Tucson in 2025/26

Q: What is the typical price of a round-trip flight between St. Louis and Tucson?

Prices are currently low for flights on this route. Typical prices usually range from $308 to $512. The lowest price recently found on this route was $226.

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Find the cheapest flights from St. Louis to Tucson

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One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:43 pm - 11:41 am

STL

TUS

20h 58m2 stops

9:59 pm - 12:12 pm

TUS

STL

13h 13m1 stop

$226Frontier

Thu, Jan 8 - Sun, Jan 11

11:55 am - 6:13 pm

STL

TUS

7h 18m1 stop

8:00 am - 2:50 pm

TUS

STL

5h 50m1 stop

$243American Airlines

Sat, Jan 17 - Tue, Jan 20

5:00 pm - 10:27 pm

STL

TUS

6h 27m1 stop

8:00 am - 2:48 pm

TUS

STL

5h 48m1 stop

$257Delta

Sat, Jan 17 - Sun, Jan 18

7:43 pm - 9:14 pm

STL

TUS

26h 31m2 stops

9:59 pm - 12:12 pm

TUS

STL

13h 13m1 stop

$263Frontier

Wed, Jan 7 - Sun, Jan 11

9:25 am - 5:08 pm

STL

TUS

8h 43m2 stops

9:00 am - 4:14 pm

TUS

STL

6h 14m1 stop

$264American Airlines

Sat, Jan 17 - Tue, Jan 20

1:07 pm - 9:14 pm

STL

TUS

9h 07m1 stop

9:59 pm - 12:12 pm

TUS

STL

13h 13m1 stop

$268Frontier

Thu, Jan 8 - Sun, Jan 11

9:25 am - 5:08 pm

STL

TUS

8h 43m2 stops

8:00 am - 4:14 pm

TUS

STL

7h 14m1 stop

$272American Airlines

Sat, Jan 17 - Tue, Jan 20

5:00 pm - 2:04 pm

STL

TUS

22h 04m2 stops

2:55 pm - 9:39 am

TUS

STL

17h 44m2 stops

$276Delta

Tue, Jan 6 - Wed, Jan 14

5:00 pm - 2:04 pm

STL

TUS

22h 04m2 stops

8:00 am - 2:48 pm

TUS

STL

5h 48m1 stop

$281Delta

Tue, Jan 6 - Wed, Jan 14

5:00 pm - 10:27 pm

STL

TUS

6h 27m1 stop

1:42 pm - 11:39 pm

TUS

STL

8h 57m1 stop

$287Delta

Tue, Jan 6 - Wed, Jan 14

American Airlines flights from St. Louis to Tucson

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

American Airlines

Jan 17

STL11:55 amLambert-St Louis

7h 18m

1 stop

TUS6:13 pmTucson

Jan 20

TUS8:00 amTucson

5h 50m

1 stop

STL2:50 pmLambert-St Louis

$243

Find similar

American Airlines

Jan 17

STL9:25 amLambert-St Louis

8h 43m

2 stops

TUS5:08 pmTucson

Jan 20

TUS9:00 amTucson

6h 14m

1 stop

STL4:14 pmLambert-St Louis

$264

Find similar

American Airlines

Jan 17

STL9:25 amLambert-St Louis

8h 43m

2 stops

TUS5:08 pmTucson

Jan 20

TUS8:00 amTucson

7h 14m

1 stop

STL4:14 pmLambert-St Louis

$272

Find similar

United Airlines flights from St. Louis to Tucson

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

United Airlines

Jan 31

STL11:20 amLambert-St Louis

10h 55m

2 stops

TUS9:15 pmTucson

Feb 7

TUS1:25 pmTucson

7h 35m

1 stop

STL10:00 pmLambert-St Louis

$292

Find similar

United Airlines

Jan 21

STL6:30 amLambert-St Louis

8h 00m

2 stops

TUS1:30 pmTucson

Jan 24

TUS6:25 amTucson

8h 38m

2 stops

STL4:03 pmLambert-St Louis

$297

Find similar

United Airlines

Jan 11

STL2:45 pmLambert-St Louis

7h 41m

1 stop

TUS9:26 pmTucson

Jan 18

TUS10:41 amTucson

5h 14m

1 stop

STL4:55 pmLambert-St Louis

$312

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 1/8

3:43 pm-11:41 am

2 stops20h 58m

Tucson

Sun 1/11

9:59 pm-12:12 pm

1 stop13h 13m

$226

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/17

11:55 am-6:13 pm

1 stop7h 18m

Tucson

Tue 1/20

8:00 am-2:50 pm

1 stop5h 50m

$243

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/17

5:00 pm-10:27 pm

1 stop6h 27m

Tucson

Sun 1/18

8:00 am-2:48 pm

1 stop5h 48m

$257

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 1/7

7:43 pm-9:14 pm

2 stops26h 31m

Tucson

Sun 1/11

9:59 pm-12:12 pm

1 stop13h 13m

$263

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/17

9:25 am-5:08 pm

2 stops8h 43m

Tucson

Tue 1/20

9:00 am-4:14 pm

1 stop6h 14m

$264

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 1/8

1:07 pm-9:14 pm

1 stop9h 07m

Tucson

Sun 1/11

9:59 pm-12:12 pm

1 stop13h 13m

$268

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/17

9:25 am-5:08 pm

2 stops8h 43m

Tucson

Tue 1/20

8:00 am-4:14 pm

1 stop7h 14m

$272

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 1/6

5:00 pm-2:04 pm

2 stops22h 04m

Tucson

Wed 1/14

2:55 pm-9:39 am

2 stops17h 44m

$276

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 1/6

5:00 pm-2:04 pm

2 stops22h 04m

Tucson

Wed 1/14

8:00 am-2:48 pm

1 stop5h 48m

$281

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 1/6

5:00 pm-10:27 pm

1 stop6h 27m

Tucson

Wed 1/14

1:42 pm-11:39 pm

1 stop8h 57m

$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 St. Louis to Tucson

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 typical price of a round-trip flight between St. Louis and Tucson?

What is the cheapest month to fly to Tucson?

In general, October is the cheapest month to fly from St. Louis to Tucson. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $289. If you don’t want to visit Tucson in October, then you should wait until August to fly from St. Louis, when ticket prices are also cheap, with an average price of $333.

What is the cheapest day to depart on your flight to Tucson?

According to our data, Tuesday is the cheapest day to fly to Tucson from St. Louis. The lowest ticket price found for a Tuesday departure recently was $347. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Tucson for around $528.

What is the cheapest time of day to depart on your flight to Tucson?

At noon is the cheapest time of day to fly from St. Louis to Tucson when you can find flight prices for as low as $383. Flying to Tucson at noon is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $408.

How far in advance should I book a flight to Tucson?

You are more likely to see cheaper flights to Tucson from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Tucson for around $368 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Tucson from St. Louis for as low as $200 on momondo.

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

As of December 2025, prices for St. Louis to Tucson flights are approximately 19% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Tucson

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

Estimated round-trip price

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

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

Fastest flight time	5h 33m
Direct flights	None

The fastest flight from St. Louis to Tucson takes 5h 33m

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

Search flight deals

How far is Lambert-St Louis to Tucson by plane?
The straight-line distance from Lambert-St Louis to Tucson is 1245.9 mi. Typically, this will take 5h 33m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Tucson Airport?
Prices for flights from Lambert-St Louis Airport to Tucson Airport were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Tucson Airport?
The number of operators available for flights from Lambert-St Louis Airport to Tucson Airport is 4 as of December 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Tucson Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Tucson Airport.
What documentation or ID do you need to fly to Tucson Airport?
The travel and health documents you'll need for your trip to Tucson Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Tucson Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Tucson?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Tucson is American Airlines, representing 63% of all bookings. The subsequent popular airlines are Southwest at 20%, United Airlines at 10%, and Delta at 7%.

Best airlines flying from St. Louis to Tucson

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $256	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
American Airlines	PriceFrom $269	Free Cancellation	Rating 7.2 11,049 reviews	Search American Airlines flights
Southwest	PriceFrom $274	Free Cancellation	Rating 7.9 4,250 reviews	Search Southwest flights
United Airlines	PriceFrom $288	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights

Tombstone

Bisbee

Sierra Vista

Oro Valley

Green Valley

Douglas

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Tucson from St. Louis.

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

Flights from St. Louis to Tucson 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 St. Louis to Tucson?

Once all potential St. Louis to Tucson 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 St. Louis to Tucson right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Tucson now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Tucson and let you know when they change.