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Cheap flights from Tucson to St. Louis from $177

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 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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
3:58 pm - 11:42 pm
TUS
-
STL
5h 44m
1 stop
American Airlines Logo
5:42 am - 8:44 am
STL
-
TUS
5h 02m
1 stop
$355American Airlines
Thu, Sep 3 - Mon, Sep 7
American Airlines Logo
6:11 am - 4:24 pm
TUS
-
STL
8h 13m
1 stop
American Airlines Logo
10:16 am - 3:07 pm
STL
-
TUS
6h 51m
1 stop
$355American Airlines
Wed, Aug 26 - Wed, Sep 2
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
4:00 pm - 10:35 pm
TUS
-
STL
4h 35m
1 stop
Southwest Logo
2:45 pm - 8:35 pm
STL
-
TUS
7h 50m
2 stops
$360Southwest
Wed, Aug 26 - Wed, Sep 2
Southwest Logo
3:45 pm - 12:45 am
TUS
-
STL
7h 00m
1 stop
Southwest Logo
7:00 am - 1:30 pm
STL
-
TUS
8h 30m
2 stops
$360Southwest
Thu, Aug 20 - Wed, Aug 26
United Airlines Logo
5:30 am - 12:40 pm
TUS
-
STL
5h 10m
1 stop
United Airlines Logo
12:59 pm - 9:14 pm
STL
-
TUS
10h 15m
2 stops
$360United Airlines
Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
1:40 pm - 8:36 pm
TUS
-
STL
4h 56m
1 stop
United Airlines Logo
1:36 pm - 4:46 pm
STL
-
TUS
5h 10m
1 stop
$388United Airlines
Fri, Oct 9 - Sat, Oct 24
United Airlines Logo
1:40 pm - 8:36 pm
TUS
-
STL
4h 56m
1 stop
United Airlines Logo
3:12 pm - 9:10 pm
STL
-
TUS
7h 58m
1 stop
$403United Airlines
Fri, Oct 9 - Tue, Oct 13
Delta Logo
1:26 pm - 11:54 pm
TUS
-
STL
8h 28m
1 stop
Delta Logo
6:00 am - 12:16 pm
STL
-
TUS
8h 16m
1 stop
$449Delta
Fri, Oct 9 - Tue, Oct 13
Alaska Airlines Logo
10:37 am - 5:10 pm
TUS
-
STL
28h 33m
1 stop
Alaska Airlines Logo
6:08 pm - 9:57 am
STL
-
TUS
17h 49m
1 stop
$569Alaska Airlines
Tue, Aug 25 - Mon, Aug 31

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Delta flights from Tucson to St. Louis

Our best Delta deals on Tucson to St. Louis flight tickets
Delta
Oct 9
TUS1:26 pmTucson
8h 28m
1 stop
STL11:54 pmLambert-St Louis
Oct 13
STL6:00 amLambert-St Louis
8h 16m
1 stop
TUS12:16 pmTucson
$449
Delta
Aug 4
TUS12:33 pmTucson
10h 08m
2 stops
STL12:41 amLambert-St Louis
Aug 10
STL5:23 pmLambert-St Louis
6h 18m
1 stop
TUS9:41 pmTucson
$1,007
Delta
Aug 4
TUS12:33 pmTucson
10h 08m
2 stops
STL12:41 amLambert-St Louis
Aug 10
STL11:00 amLambert-St Louis
12h 46m
2 stops
TUS9:46 pmTucson
$1,058

United Airlines flights from Tucson to St. Louis

Our best United Airlines deals on Tucson to St. Louis flight tickets
United Airlines
Aug 26
TUS5:30 amTucson
5h 10m
1 stop
STL12:40 pmLambert-St Louis
Sep 2
STL12:59 pmLambert-St Louis
10h 15m
2 stops
TUS9:14 pmTucson
$360
United Airlines
Oct 9
TUS1:40 pmTucson
4h 56m
1 stop
STL8:36 pmLambert-St Louis
Oct 13
STL3:12 pmLambert-St Louis
7h 58m
1 stop
TUS9:10 pmTucson
$403
United Airlines
Oct 20
TUS5:15 amTucson
5h 25m
1 stop
STL12:40 pmLambert-St Louis
Oct 21
STL3:12 pmLambert-St Louis
7h 58m
1 stop
TUS9:10 pmTucson
$445

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 August 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

Thu 9/3

3:58 pm-11:42 pm

1 stop5h 44m

Lambert-St Louis

Mon 9/7

5:42 am-8:44 am

1 stop5h 02m

$355

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 8/26

6:11 am-4:24 pm

1 stop8h 13m

Lambert-St Louis

Wed 9/2

10:16 am-3:07 pm

1 stop6h 51m

$355

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

Wed 8/26

4:00 pm-10:35 pm

1 stop4h 35m

Lambert-St Louis

Wed 9/2

2:45 pm-8:35 pm

2 stops7h 50m

$360

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Thu 8/20

3:45 pm-12:45 am

1 stop7h 00m

Lambert-St Louis

Wed 8/26

7:00 am-1:30 pm

2 stops8h 30m

$360

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 8/26

5:30 am-12:40 pm

1 stop5h 10m

Lambert-St Louis

Wed 9/2

12:59 pm-9:14 pm

2 stops10h 15m

$360
Quickest round-trip

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 10/9

1:40 pm-8:36 pm

1 stop4h 56m

Lambert-St Louis

Sat 10/24

1:36 pm-4:46 pm

1 stop5h 10m

$388

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 10/9

1:40 pm-8:36 pm

1 stop4h 56m

Lambert-St Louis

Tue 10/13

3:12 pm-9:10 pm

1 stop7h 58m

$403

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Fri 10/9

1:26 pm-11:54 pm

1 stop8h 28m

Lambert-St Louis

Tue 10/13

6:00 am-12:16 pm

1 stop8h 16m

$449

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Tue 8/25

10:37 am-5:10 pm

1 stop28h 33m

Lambert-St Louis

Mon 8/31

6:08 pm-9:57 am

1 stop17h 49m

$569

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 August 2026, prices for Tucson to St. Louis flights are approximately 17% 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

5h 40m

Direct flights

None
The fastest flight from Tucson to St. Louis takes 5h 40m
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 5h 40m.

  • 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
11,845 reviews
Search American Airlines flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
10,062 reviews
Search United Airlines flights
SouthwestPriceFrom $266Free CancellationRating
8.0
4,229 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 2 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
Alton
O'Fallon
Clayton
Farmington
Fenton
Wentzville
Festus
Eureka
Edwardsville
Litchfield
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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