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Cheap flights from Tucson to St. Louis from $152

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 4/1. 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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Find the cheapest flights from Tucson to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:04 pm - 11:19 am
TUS
-
STL
21h 15m
1 stop
Frontier Logo
10:12 pm - 8:07 am
STL
-
TUS
11h 55m
1 stop
$244Frontier
Fri, Mar 27 - Thu, Apr 2
Delta Logo
7:10 am - 3:01 pm
TUS
-
STL
5h 51m
1 stop
Delta Logo
2:20 pm - 9:31 pm
STL
-
TUS
9h 11m
1 stop
$303Delta
Sat, Apr 25 - Tue, Apr 28
Frontier Logo
12:04 pm - 9:49 am
TUS
-
STL
19h 45m
2 stops
Frontier Logo
10:12 pm - 8:07 am
STL
-
TUS
11h 55m
1 stop
$310Frontier
Fri, Mar 27 - Thu, Apr 2
American Airlines Logo
3:06 pm - 11:59 pm
TUS
-
STL
6h 53m
1 stop
American Airlines Logo
5:21 pm - 11:59 pm
STL
-
TUS
8h 38m
1 stop
$317American Airlines
Sat, Apr 25 - Tue, Apr 28
Delta Logo
5:04 pm - 12:21 am
TUS
-
STL
5h 17m
1 stop
Delta Logo
6:12 pm - 9:55 pm
STL
-
TUS
5h 43m
1 stop
$323Delta
Tue, Mar 24 - Wed, Mar 25
American Airlines Logo
3:06 pm - 12:12 am
TUS
-
STL
7h 06m
1 stop
American Airlines Logo
5:51 am - 11:48 am
STL
-
TUS
7h 57m
1 stop
$325American Airlines
Thu, May 7 - Tue, May 12
American Airlines Logo
2:15 pm - 10:59 pm
TUS
-
STL
6h 44m
2 stops
American Airlines Logo
5:20 am - 8:59 am
STL
-
TUS
5h 39m
1 stop
$330American Airlines
Tue, Apr 14 - Thu, Apr 16
Frontier Logo
12:04 pm - 11:19 am
TUS
-
STL
21h 15m
1 stop
Frontier Logo
8:06 pm - 8:14 am
STL
-
TUS
14h 08m
1 stop
$345Frontier
Fri, Mar 20 - Thu, Mar 26
Frontier Logo
1:23 pm - 9:48 am
TUS
-
STL
18h 25m
2 stops
Frontier Logo
10:12 pm - 8:07 am
STL
-
TUS
11h 55m
1 stop
$347Frontier
Fri, Apr 3 - Sun, Apr 5
Multiple Airlines Logo
7:46 am - 11:59 pm
TUS
-
STL
14h 13m
1 stop
Multiple Airlines Logo
10:12 pm - 8:07 am
STL
-
TUS
11h 55m
1 stop
$355Multiple Airlines
Thu, Apr 2 - Sun, Apr 5

Southwest flights from Tucson to St. Louis

Our best Southwest deals on Tucson to St. Louis flight tickets
Southwest
Apr 2
TUS1:35 pmTucson
8h 10m
2 stops
STL11:45 pmLambert-St Louis
Apr 5
STL6:30 pmLambert-St Louis
7h 15m
1 stop
TUS11:45 pmTucson
$382
Southwest
Apr 14
TUS7:50 amTucson
8h 15m
2 stops
STL6:05 pmLambert-St Louis
Apr 16
STL5:15 pmLambert-St Louis
7h 35m
2 stops
TUS10:50 pmTucson
$394
Southwest
May 7
TUS3:20 pmTucson
6h 30m
1 stop
STL11:50 pmLambert-St Louis
May 18
STL5:15 pmLambert-St Louis
8h 05m
2 stops
TUS11:20 pmTucson
$402

American Airlines flights from Tucson to St. Louis

Our best American Airlines deals on Tucson to St. Louis flight tickets
American Airlines
Apr 25
TUS3:06 pmTucson
6h 53m
1 stop
STL11:59 pmLambert-St Louis
Apr 28
STL5:21 pmLambert-St Louis
8h 38m
1 stop
TUS11:59 pmTucson
$317
American Airlines
May 7
TUS3:06 pmTucson
7h 06m
1 stop
STL12:12 amLambert-St Louis
May 12
STL5:51 amLambert-St Louis
7h 57m
1 stop
TUS11:48 amTucson
$325
American Airlines
Apr 14
TUS2:15 pmTucson
6h 44m
2 stops
STL10:59 pmLambert-St Louis
Apr 16
STL5:20 amLambert-St Louis
5h 39m
1 stop
TUS8:59 amTucson
$330

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 March 4, 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

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 3/27

12:04 pm-11:19 am

1 stop21h 15m

Lambert-St Louis

Thu 4/2

10:12 pm-8:07 am

1 stop11h 55m

$244

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 4/25

7:10 am-3:01 pm

1 stop5h 51m

Lambert-St Louis

Tue 4/28

2:20 pm-9:31 pm

1 stop9h 11m

$303

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 3/27

12:04 pm-9:49 am

2 stops19h 45m

Lambert-St Louis

Thu 4/2

10:12 pm-8:07 am

1 stop11h 55m

$310

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 4/25

3:06 pm-11:59 pm

1 stop6h 53m

Lambert-St Louis

Tue 4/28

5:21 pm-11:59 pm

1 stop8h 38m

$317

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 3/24

5:04 pm-12:21 am

1 stop5h 17m

Lambert-St Louis

Wed 3/25

6:12 pm-9:55 pm

1 stop5h 43m

$323

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 5/7

3:06 pm-12:12 am

1 stop7h 06m

Lambert-St Louis

Tue 5/12

5:51 am-11:48 am

1 stop7h 57m

$325

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 4/14

2:15 pm-10:59 pm

2 stops6h 44m

Lambert-St Louis

Thu 4/16

5:20 am-8:59 am

1 stop5h 39m

$330

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 3/20

12:04 pm-11:19 am

1 stop21h 15m

Lambert-St Louis

Thu 3/26

8:06 pm-8:14 am

1 stop14h 08m

$345

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 4/3

1:23 pm-9:48 am

2 stops18h 25m

Lambert-St Louis

Sun 4/5

10:12 pm-8:07 am

1 stop11h 55m

$347

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 4/2

7:46 am-11:59 pm

1 stop14h 13m

Lambert-St Louis

Sun 4/5

10:12 pm-8:07 am

1 stop11h 55m

$355

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 April is another great option to travel to St. Louis, with average flight prices from Tucson averaging around $316.

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 $389 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 $315 on momondo.

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

As of March 2026, prices for Tucson to St. Louis flights are approximately 21% 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

Fastest flight time

5h 19m

Direct flights

None
The fastest flight from Tucson to St. Louis takes 5h 19m
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 5h 19m.

  • 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
8,248 reviews
Search Delta flights
American AirlinesPriceFrom $214Free CancellationRating
7.1
11,381 reviews
Search American Airlines flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
9,389 reviews
Search United Airlines flights
SouthwestPriceFrom $264Free CancellationRating
8.0
4,307 reviews
Search Southwest flights

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
St. Peters
Wentzville
Collinsville
Alton
Fenton
Farmington
Edwardsville
Festus
Clayton
Eureka
Litchfield
Glencoe
Grafton

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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