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Cheap flights from Tucson to St. Louis from $174

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 8/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Tucson to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
1:17 pm - 10:41 pm
TUS
-
STL
7h 24m
1 stop
American Airlines Logo
5:42 am - 8:44 am
STL
-
TUS
5h 02m
1 stop
$347American Airlines
Thu, Sep 3 - Mon, Sep 7
United Airlines Logo
1:29 pm - 8:46 pm
TUS
-
STL
5h 17m
1 stop
United Airlines Logo
12:59 pm - 9:14 pm
STL
-
TUS
10h 15m
2 stops
$352United Airlines
Thu, Aug 13 - Sat, Aug 15
American Airlines Logo
2:04 pm - 8:52 pm
TUS
-
STL
4h 48m
1 stop
American Airlines Logo
7:10 pm - 11:26 pm
STL
-
TUS
6h 16m
1 stop
$355American Airlines
Tue, Sep 29 - Tue, Oct 6
Southwest Logo
11:55 am - 8:10 pm
TUS
-
STL
6h 15m
2 stops
Southwest Logo
3:45 pm - 9:55 pm
STL
-
TUS
8h 10m
2 stops
$357Southwest
Thu, Aug 20 - Mon, Aug 31
Southwest Logo
10:40 am - 6:25 pm
TUS
-
STL
5h 45m
1 stop
Southwest Logo
7:10 am - 12:40 pm
STL
-
TUS
7h 30m
2 stops
$360Southwest
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
3:45 pm - 12:50 am
TUS
-
STL
7h 05m
1 stop
Southwest Logo
3:45 pm - 10:00 pm
STL
-
TUS
8h 15m
2 stops
$365Southwest
Thu, Sep 10 - Wed, Sep 16
Southwest Logo
10:40 am - 7:45 pm
TUS
-
STL
7h 05m
2 stops
Southwest Logo
12:20 pm - 6:25 pm
STL
-
TUS
8h 05m
2 stops
$366Southwest
Sat, Aug 22 - Sat, Aug 29
American Airlines Logo
3:58 pm - 11:42 pm
TUS
-
STL
5h 44m
1 stop
American Airlines Logo
5:42 am - 11:13 am
STL
-
TUS
7h 31m
2 stops
$370American Airlines
Thu, Aug 13 - Sat, Aug 15
Southwest Logo
7:25 am - 5:50 pm
TUS
-
STL
8h 25m
2 stops
Southwest Logo
7:00 am - 12:40 pm
STL
-
TUS
7h 40m
2 stops
$371Southwest
Wed, Sep 16 - Sat, Sep 26
American Airlines Logo
7:00 am - 2:44 pm
TUS
-
STL
5h 44m
1 stop
American Airlines Logo
10:12 am - 4:45 pm
STL
-
TUS
8h 33m
2 stops
$374American Airlines
Tue, Sep 29 - Tue, Oct 6

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American Airlines flights from Tucson to St. Louis

Our best American Airlines deals on Tucson to St. Louis flight tickets
American Airlines
Sep 3
TUS1:17 pmTucson
7h 24m
1 stop
STL10:41 pmLambert-St Louis
Sep 7
STL5:42 amLambert-St Louis
5h 02m
1 stop
TUS8:44 amTucson
$347
American Airlines
Sep 29
TUS2:04 pmTucson
4h 48m
1 stop
STL8:52 pmLambert-St Louis
Oct 6
STL7:10 pmLambert-St Louis
6h 16m
1 stop
TUS11:26 pmTucson
$355
American Airlines
Aug 13
TUS3:58 pmTucson
5h 44m
1 stop
STL11:42 pmLambert-St Louis
Aug 15
STL5:42 amLambert-St Louis
7h 31m
2 stops
TUS11:13 amTucson
$370

Southwest flights from Tucson to St. Louis

Our best Southwest deals on Tucson to St. Louis flight tickets
Southwest
Aug 20
TUS11:55 amTucson
6h 15m
2 stops
STL8:10 pmLambert-St Louis
Aug 31
STL3:45 pmLambert-St Louis
8h 10m
2 stops
TUS9:55 pmTucson
$357
Southwest
Aug 22
TUS10:40 amTucson
5h 45m
1 stop
STL6:25 pmLambert-St Louis
Aug 29
STL7:10 amLambert-St Louis
7h 30m
2 stops
TUS12:40 pmTucson
$360
Southwest
Sep 10
TUS3:45 pmTucson
7h 05m
1 stop
STL12:50 amLambert-St Louis
Sep 16
STL3:45 pmLambert-St Louis
8h 15m
2 stops
TUS10:00 pmTucson
$365

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 July 27, 2026.
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

Cheapest round-trip

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 9/3

1:17 pm-10:41 pm

1 stop7h 24m

Lambert-St Louis

Mon 9/7

5:42 am-8:44 am

1 stop5h 02m

$347

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 8/13

1:29 pm-8:46 pm

1 stop5h 17m

Lambert-St Louis

Sat 8/15

12:59 pm-9:14 pm

2 stops10h 15m

$352
Quickest round-trip

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 9/29

2:04 pm-8:52 pm

1 stop4h 48m

Lambert-St Louis

Tue 10/6

7:10 pm-11:26 pm

1 stop6h 16m

$355

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 8/20

11:55 am-8:10 pm

2 stops6h 15m

Lambert-St Louis

Mon 8/31

3:45 pm-9:55 pm

2 stops8h 10m

$357

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 8/22

10:40 am-6:25 pm

1 stop5h 45m

Lambert-St Louis

Sat 8/29

7:10 am-12:40 pm

2 stops7h 30m

$360

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 9/10

3:45 pm-12:50 am

1 stop7h 05m

Lambert-St Louis

Wed 9/16

3:45 pm-10:00 pm

2 stops8h 15m

$365

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 8/22

10:40 am-7:45 pm

2 stops7h 05m

Lambert-St Louis

Sat 8/29

12:20 pm-6:25 pm

2 stops8h 05m

$366

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 8/13

3:58 pm-11:42 pm

1 stop5h 44m

Lambert-St Louis

Sat 8/15

5:42 am-11:13 am

2 stops7h 31m

$370

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 9/16

7:25 am-5:50 pm

2 stops8h 25m

Lambert-St Louis

Sat 9/26

7:00 am-12:40 pm

2 stops7h 40m

$371

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 9/29

7:00 am-2:44 pm

1 stop5h 44m

Lambert-St Louis

Tue 10/6

10:12 am-4:45 pm

2 stops8h 33m

$374

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 cheapest month to fly to St. Louis?

In general, February 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 $287. The month of August is another great option to travel to St. Louis, with average flight prices from Tucson averaging around $302.

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

As of July 2026, prices for Tucson to St. Louis flights are approximately 27% 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 35m

Direct flights

None
The fastest flight from Tucson to St. Louis takes 4h 35m
There are no direct flights from Tucson to St. Louis. There are no popular flight routes from Tucson to St. Louis.
Search flight deals

Frequently asked questions about flying from Tucson to St. Louis

  • 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 35m.

  • 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
American AirlinesPriceFrom $239Free CancellationRating
7.1
11,844 reviews
Search American Airlines flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
10,037 reviews
Search United Airlines flights
SouthwestPriceFrom $266Free CancellationRating
8.0
4,231 reviews
Search Southwest 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 $476 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
Fairview Heights
Hermann
St. Peters
Maryland Heights
Florissant
Collinsville
O'Fallon
Alton
Fenton
Farmington
Clayton
Wentzville
Festus
Eureka
Litchfield
Edwardsville
Grafton
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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