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Cheap flights from Tucson to St. Louis from $122

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Tucson to St. Louis departing on 12/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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Delta Logo
1:42 pm - 8:37 pmTUS-STL
5h 55m1 stop
Delta Logo
2:38 pm - 10:27 pmSTL-TUS
8h 49m1 stop
$263Delta
Find Deal
Wed, Jan 28 - Wed, Feb 4
Delta Logo
12:24 pm - 9:38 pmTUS-STL
8h 14m1 stop
Delta Logo
9:59 am - 4:22 pmSTL-TUS
7h 23m1 stop
$287Delta
Find Deal
Wed, Jan 28 - Wed, Feb 4
Delta Logo
8:00 am - 2:48 pmTUS-STL
5h 48m1 stop
Delta Logo
6:00 am - 12:32 pmSTL-TUS
7h 32m1 stop
$315Delta
Find Deal
Thu, Jan 8 - Sun, Jan 11
American Airlines Logo
2:50 pm - 10:59 pmTUS-STL
7h 09m2 stops
American Airlines Logo
9:25 am - 4:10 pmSTL-TUS
7h 45m1 stop
$321American Airlines
Find Deal
Wed, Jan 28 - Wed, Feb 4
American Airlines Logo
2:50 pm - 10:59 pmTUS-STL
7h 09m2 stops
American Airlines Logo
11:55 am - 4:10 pmSTL-TUS
5h 15m1 stop
$323American Airlines
Find Deal
Wed, Jan 28 - Wed, Feb 4
Delta Logo
1:42 pm - 8:37 pmTUS-STL
5h 55m1 stop
Delta Logo
6:00 am - 12:32 pmSTL-TUS
7h 32m1 stop
$335Delta
Find Deal
Thu, Jan 8 - Sun, Jan 11
American Airlines Logo
2:50 pm - 10:59 pmTUS-STL
7h 09m2 stops
American Airlines Logo
5:04 pm - 10:55 pmSTL-TUS
6h 51m1 stop
$340American Airlines
Find Deal
Fri, Jan 23 - Tue, Jan 27
American Airlines Logo
1:50 pm - 10:11 pmTUS-STL
7h 21m1 stop
American Airlines Logo
6:00 am - 12:50 pmSTL-TUS
7h 50m1 stop
$347American Airlines
Find Deal
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
10:41 am - 10:58 pmTUS-STL
11h 17m2 stops
United Airlines Logo
11:20 am - 9:26 pmSTL-TUS
11h 06m2 stops
$353United Airlines
Find Deal
Wed, Jan 28 - Wed, Feb 4
Southwest Logo
7:50 am - 5:30 pmTUS-STL
8h 40m2 stops
Southwest Logo
12:25 pm - 8:50 pmSTL-TUS
9h 25m2 stops
$357Southwest
Find Deal
Fri, Jan 23 - Tue, Jan 27

Delta flights from Tucson to St. Louis

Our best Delta deals on Tucson to St. Louis flight tickets
Delta
Jan 28
TUS1:42 pmTucson
5h 55m
1 stop
STL8:37 pmLambert-St Louis
Feb 4
STL2:38 pmLambert-St Louis
8h 49m
1 stop
TUS10:27 pmTucson
$263
Find similar
Delta
Jan 28
TUS12:24 pmTucson
8h 14m
1 stop
STL9:38 pmLambert-St Louis
Feb 4
STL9:59 amLambert-St Louis
7h 23m
1 stop
TUS4:22 pmTucson
$287
Find similar
Delta
Jan 8
TUS8:00 amTucson
5h 48m
1 stop
STL2:48 pmLambert-St Louis
Jan 11
STL6:00 amLambert-St Louis
7h 32m
1 stop
TUS12:32 pmTucson
$315
Find similar

Southwest flights from Tucson to St. Louis

Our best Southwest deals on Tucson to St. Louis flight tickets
Southwest
Jan 23
TUS7:50 amTucson
8h 40m
2 stops
STL5:30 pmLambert-St Louis
Jan 27
STL12:25 pmLambert-St Louis
9h 25m
2 stops
TUS8:50 pmTucson
$357
Find similar
Southwest
Jan 2
TUS5:05 amTucson
6h 15m
1 stop
STL12:20 pmLambert-St Louis
Jan 5
STL2:00 pmLambert-St Louis
5h 45m
1 stop
TUS6:45 pmTucson
$373
Find similar
Southwest
Jan 2
TUS5:00 pmTucson
5h 35m
1 stop
STL11:35 pmLambert-St Louis
Jan 5
STL9:50 amLambert-St Louis
9h 55m
2 stops
TUS6:45 pmTucson
$378
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Tucson to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 21, 2025.
Use the filters below to find and compare flights from Tucson to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 1/28

1:42 pm-8:37 pm

1 stop5h 55m

Lambert-St Louis

Wed 2/4

2:38 pm-10:27 pm

1 stop8h 49m

$263

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 1/28

12:24 pm-9:38 pm

1 stop8h 14m

Lambert-St Louis

Wed 2/4

9:59 am-4:22 pm

1 stop7h 23m

$287

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 1/8

8:00 am-2:48 pm

1 stop5h 48m

Lambert-St Louis

Sun 1/11

6:00 am-12:32 pm

1 stop7h 32m

$315

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 1/28

2:50 pm-10:59 pm

2 stops7h 09m

Lambert-St Louis

Wed 2/4

9:25 am-4:10 pm

1 stop7h 45m

$321

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 1/28

2:50 pm-10:59 pm

2 stops7h 09m

Lambert-St Louis

Wed 2/4

11:55 am-4:10 pm

1 stop5h 15m

$323

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 1/8

1:42 pm-8:37 pm

1 stop5h 55m

Lambert-St Louis

Sun 1/11

6:00 am-12:32 pm

1 stop7h 32m

$335

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 1/23

2:50 pm-10:59 pm

2 stops7h 09m

Lambert-St Louis

Tue 1/27

5:04 pm-10:55 pm

1 stop6h 51m

$340

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 2/25

1:50 pm-10:11 pm

1 stop7h 21m

Lambert-St Louis

Sun 3/1

6:00 am-12:50 pm

1 stop7h 50m

$347

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 1/28

10:41 am-10:58 pm

2 stops11h 17m

Lambert-St Louis

Wed 2/4

11:20 am-9:26 pm

2 stops11h 06m

$353

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 1/23

7:50 am-5:30 pm

2 stops8h 40m

Lambert-St Louis

Tue 1/27

12:25 pm-8:50 pm

2 stops9h 25m

$357

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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

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?

  • 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?

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
DeltaPriceFrom $134Free CancellationRating
7.9
8,002 reviews
Search Delta flights
American AirlinesPriceFrom $242Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
SouthwestPriceFrom $266Free CancellationRating
8.0
4,252 reviews
Search Southwest flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
9,035 reviews
Search United Airlines flights

  • Southwest Flights From Tucson to St. Louis

    Southwest flight deals from Tucson to St. Louis start from $266 round-trip. Over the 3 Southwest flights for this route in a normal week, average airfare is usually $386 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
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.

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