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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 4/21. 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

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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.
Delta Logo
4:52 pm - 12:30 am
TUS
-
STL
5h 38m
1 stop
Delta Logo
2:27 pm - 9:30 pm
STL
-
TUS
9h 03m
1 stop
$347Delta
Wed, May 13 - Wed, May 20
Southwest Logo
7:50 am - 6:05 pm
TUS
-
STL
8h 15m
2 stops
Southwest Logo
6:35 am - 10:25 am
STL
-
TUS
5h 50m
1 stop
$352Southwest
Tue, May 12 - Tue, May 19
Southwest Logo
3:20 pm - 10:05 pm
TUS
-
STL
4h 45m
1 stop
Southwest Logo
6:30 pm - 10:10 pm
STL
-
TUS
5h 40m
1 stop
$357Southwest
Thu, May 7 - Tue, May 12
Southwest Logo
7:50 am - 6:05 pm
TUS
-
STL
8h 15m
2 stops
Southwest Logo
6:00 pm - 10:50 pm
STL
-
TUS
6h 50m
1 stop
$362Southwest
Wed, Apr 29 - Mon, May 11
Delta Logo
2:06 pm - 11:13 pm
TUS
-
STL
7h 07m
1 stop
Delta Logo
6:20 am - 1:11 pm
STL
-
TUS
8h 51m
1 stop
$367Delta
Mon, Apr 27 - Mon, May 4
Southwest Logo
7:30 am - 12:15 am
TUS
-
STL
14h 45m
2 stops
Southwest Logo
5:30 am - 11:55 am
STL
-
TUS
8h 25m
2 stops
$373Southwest
Thu, May 7 - Tue, May 12
Southwest Logo
12:45 pm - 8:10 pm
TUS
-
STL
5h 25m
1 stop
Southwest Logo
3:55 pm - 9:25 pm
STL
-
TUS
7h 30m
2 stops
$392Southwest
Wed, May 13 - Wed, May 20
American Airlines Logo
11:39 am - 6:30 pm
TUS
-
STL
4h 51m
1 stop
American Airlines Logo
7:03 am - 12:31 pm
STL
-
TUS
7h 28m
1 stop
$397American Airlines
Sat, Jun 6 - Tue, Jun 9
American Airlines Logo
3:53 pm - 10:59 pm
TUS
-
STL
5h 06m
1 stop
American Airlines Logo
5:21 pm - 11:59 pm
STL
-
TUS
8h 38m
1 stop
$401American Airlines
Thu, May 14 - Tue, May 19
Southwest Logo
8:30 pm - 10:35 am
TUS
-
STL
12h 05m
1 stop
Southwest Logo
5:30 am - 9:55 am
STL
-
TUS
6h 25m
1 stop
$402Southwest
Sun, May 3 - Wed, May 6

United Airlines flights from Tucson to St. Louis

Our best United Airlines deals on Tucson to St. Louis flight tickets
United Airlines
Apr 28
TUS6:00 amTucson
5h 08m
1 stop
STL1:08 pmLambert-St Louis
May 2
STL8:46 amLambert-St Louis
5h 51m
1 stop
TUS12:37 pmTucson
$437
United Airlines
Apr 28
TUS6:00 amTucson
5h 08m
1 stop
STL1:08 pmLambert-St Louis
May 2
STL10:25 amLambert-St Louis
12h 56m
2 stops
TUS9:21 pmTucson
$442
United Airlines
Apr 28
TUS6:30 amTucson
12h 43m
2 stops
STL9:13 pmLambert-St Louis
May 2
STL11:15 amLambert-St Louis
12h 06m
2 stops
TUS9:21 pmTucson
$487

Delta flights from Tucson to St. Louis

Our best Delta deals on Tucson to St. Louis flight tickets
Delta
May 13
TUS4:52 pmTucson
5h 38m
1 stop
STL12:30 amLambert-St Louis
May 20
STL2:27 pmLambert-St Louis
9h 03m
1 stop
TUS9:30 pmTucson
$347
Delta
Apr 27
TUS2:06 pmTucson
7h 07m
1 stop
STL11:13 pmLambert-St Louis
May 4
STL6:20 amLambert-St Louis
8h 51m
1 stop
TUS1:11 pmTucson
$367
Delta
May 14
TUS1:25 pmTucson
6h 04m
1 stop
STL9:29 pmLambert-St Louis
May 19
STL2:27 pmLambert-St Louis
9h 03m
1 stop
TUS9:30 pmTucson
$431

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 April 2, 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

Wed 5/13

4:52 pm-12:30 am

1 stop5h 38m

Lambert-St Louis

Wed 5/20

2:27 pm-9:30 pm

1 stop9h 03m

$347

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 5/12

7:50 am-6:05 pm

2 stops8h 15m

Lambert-St Louis

Tue 5/19

6:35 am-10:25 am

1 stop5h 50m

$352
Quickest round-trip

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 5/7

3:20 pm-10:05 pm

1 stop4h 45m

Lambert-St Louis

Tue 5/12

6:30 pm-10:10 pm

1 stop5h 40m

$357

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 4/29

7:50 am-6:05 pm

2 stops8h 15m

Lambert-St Louis

Mon 5/11

6:00 pm-10:50 pm

1 stop6h 50m

$362

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Mon 4/27

2:06 pm-11:13 pm

1 stop7h 07m

Lambert-St Louis

Mon 5/4

6:20 am-1:11 pm

1 stop8h 51m

$367

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 5/7

7:30 am-12:15 am

2 stops14h 45m

Lambert-St Louis

Tue 5/12

5:30 am-11:55 am

2 stops8h 25m

$373

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 5/13

12:45 pm-8:10 pm

1 stop5h 25m

Lambert-St Louis

Wed 5/20

3:55 pm-9:25 pm

2 stops7h 30m

$392

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sat 6/6

11:39 am-6:30 pm

1 stop4h 51m

Lambert-St Louis

Tue 6/9

7:03 am-12:31 pm

1 stop7h 28m

$397

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 5/14

3:53 pm-10:59 pm

1 stop5h 06m

Lambert-St Louis

Tue 5/19

5:21 pm-11:59 pm

1 stop8h 38m

$401

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Sun 5/3

8:30 pm-10:35 am

1 stop12h 05m

Lambert-St Louis

Wed 5/6

5:30 am-9:55 am

1 stop6h 25m

$402

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, 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 October is another great option to travel to St. Louis, with average flight prices from Tucson averaging around $321.

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 $330 on momondo.

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

As of April 2026, prices for Tucson to St. Louis flights are approximately 9% 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

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
DeltaPriceFrom $134Free CancellationRating
7.9
8,370 reviews
Search Delta flights
American AirlinesPriceFrom $214Free CancellationRating
7.1
11,549 reviews
Search American Airlines flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
9,533 reviews
Search United Airlines flights
SouthwestPriceFrom $266Free CancellationRating
8.0
4,337 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
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Clayton
Festus
Eureka
Edwardsville
Litchfield
Shrewsbury
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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