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Cheap flights from Tucson to St. Louis from $178

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 9/5. 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.
Southwest Logo
7:50 am - 3:30 pmTUS  Tucson-STL Lambert-St Louis
5h 40m1 stop Los Angeles Los Angeles
Southwest Logo
6:00 pm - 9:45 pmSTL  Lambert-St Louis-TUS Tucson
5h 45m1 stop Phoenix Sky Harbor Intl
$350Southwest
Sat, Sep 5 - Fri, Sep 11
Southwest Logo
7:50 am - 3:30 pmTUS  Tucson-STL Lambert-St Louis
5h 40m1 stop Los Angeles Los Angeles
Southwest Logo
2:20 pm - 9:45 pmSTL  Lambert-St Louis-TUS Tucson
9h 25m2 stops Kansas City Phoenix Sky Harbor Intl
$356Southwest
Sat, Sep 5 - Fri, Sep 11
American Airlines Logo
7:56 am - 4:47 pmTUS  Tucson-STL Lambert-St Louis
7h 51m1 stop Chicago O'Hare Intl
American Airlines Logo
2:23 pm - 7:14 pmSTL  Lambert-St Louis-TUS Tucson
5h 51m1 stop Phoenix Sky Harbor Intl
$357American Airlines
Thu, Nov 19 - Mon, Nov 23
Southwest Logo
10:40 am - 7:00 pmTUS  Tucson-STL Lambert-St Louis
6h 20m2 stops Phoenix Sky Harbor Intl Denver Intl
Southwest Logo
2:20 pm - 9:45 pmSTL  Lambert-St Louis-TUS Tucson
9h 25m2 stops Kansas City Phoenix Sky Harbor Intl
$366Southwest
Sat, Sep 5 - Fri, Sep 11
American Airlines Logo
3:58 pm - 11:42 pmTUS  Tucson-STL Lambert-St Louis
5h 44m1 stop Dallas/Fort Worth
American Airlines Logo
8:30 am - 12:20 pmSTL  Lambert-St Louis-TUS Tucson
5h 50m1 stop Dallas/Fort Worth
$371American Airlines
Wed, Sep 2 - Wed, Sep 9
American Airlines Logo
10:25 am - 8:26 pmTUS  Tucson-STL Lambert-St Louis
8h 01m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
American Airlines Logo
3:34 pm - 7:05 pmSTL  Lambert-St Louis-TUS Tucson
5h 31m1 stop Dallas/Fort Worth
$376American Airlines
Wed, Sep 2 - Wed, Sep 9
United Airlines Logo
1:29 pm - 8:38 pmTUS  Tucson-STL Lambert-St Louis
5h 09m1 stop Denver Intl
United Airlines Logo
4:40 pm - 8:35 pmSTL  Lambert-St Louis-TUS Tucson
5h 55m1 stop Denver Intl
$385United Airlines
Mon, Sep 21 - Wed, Sep 23
United Airlines Logo
1:40 pm - 8:36 pmTUS  Tucson-STL Lambert-St Louis
4h 56m1 stop Denver Intl
United Airlines Logo
9:04 am - 4:46 pmSTL  Lambert-St Louis-TUS Tucson
9h 42m2 stops Chicago O'Hare Intl Denver Intl
$390United Airlines
Thu, Oct 15 - Tue, Oct 20
Delta Logo
1:26 pm - 11:54 pmTUS  Tucson-STL Lambert-St Louis
8h 28m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 12:16 pmSTL  Lambert-St Louis-TUS Tucson
8h 16m1 stop Atlanta Hartsfield-Jackson
$449Delta
Fri, Oct 9 - Tue, Oct 13
Delta Logo
6:00 am - 2:33 pmTUS  Tucson-STL Lambert-St Louis
6h 33m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 12:18 pmSTL  Lambert-St Louis-TUS Tucson
7h 18m1 stop Atlanta Hartsfield-Jackson
$537Delta
Sat, Aug 22 - Wed, Aug 26

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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
Nov 19
TUS7:56 amTucson
7h 51m
1 stop
STL4:47 pmLambert-St Louis
Nov 23
STL2:23 pmLambert-St Louis
5h 51m
1 stop
TUS7:14 pmTucson
$357
American Airlines
Sep 2
TUS3:58 pmTucson
5h 44m
1 stop
STL11:42 pmLambert-St Louis
Sep 9
STL8:30 amLambert-St Louis
5h 50m
1 stop
TUS12:20 pmTucson
$371
American Airlines
Sep 2
TUS10:25 amTucson
8h 01m
2 stops
STL8:26 pmLambert-St Louis
Sep 9
STL3:34 pmLambert-St Louis
5h 31m
1 stop
TUS7:05 pmTucson
$376

Southwest flights from Tucson to St. Louis

Our best Southwest deals on Tucson to St. Louis flight tickets
Southwest
Sep 5
TUS7:50 amTucson
5h 40m
1 stop
STL3:30 pmLambert-St Louis
Sep 11
STL6:00 pmLambert-St Louis
5h 45m
1 stop
TUS9:45 pmTucson
$350
Southwest
Sep 5
TUS7:50 amTucson
5h 40m
1 stop
STL3:30 pmLambert-St Louis
Sep 11
STL2:20 pmLambert-St Louis
9h 25m
2 stops
TUS9:45 pmTucson
$356
Southwest
Sep 5
TUS10:40 amTucson
6h 20m
2 stops
STL7:00 pmLambert-St Louis
Sep 11
STL2:20 pmLambert-St Louis
9h 25m
2 stops
TUS9:45 pmTucson
$366

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 7, 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 Tucson - STL Lambert-St Louis

TUSSTL

Tucson

Sat 9/5

7:50 am-3:30 pm

1 stop5h 40m

Lambert-St Louis

Fri 9/11

6:00 pm-9:45 pm

1 stop5h 45m

$350

TucsonSt. Louis

TUS Tucson - STL Lambert-St Louis

TUSSTL

Tucson

Sat 9/5

7:50 am-3:30 pm

1 stop5h 40m

Lambert-St Louis

Fri 9/11

2:20 pm-9:45 pm

2 stops9h 25m

$356

TucsonSt. Louis

TUS Tucson - STL Lambert-St Louis

TUSSTL

Tucson

Thu 11/19

7:56 am-4:47 pm

1 stop7h 51m

Lambert-St Louis

Mon 11/23

2:23 pm-7:14 pm

1 stop5h 51m

$357

TucsonSt. Louis

TUS Tucson - STL Lambert-St Louis

TUSSTL

Tucson

Sat 9/5

10:40 am-7:00 pm

2 stops6h 20m

Lambert-St Louis

Fri 9/11

2:20 pm-9:45 pm

2 stops9h 25m

$366

TucsonSt. Louis

TUS Tucson - STL Lambert-St Louis

TUSSTL

Tucson

Wed 9/2

3:58 pm-11:42 pm

1 stop5h 44m

Lambert-St Louis

Wed 9/9

8:30 am-12:20 pm

1 stop5h 50m

$371

TucsonSt. Louis

TUS Tucson - STL Lambert-St Louis

TUSSTL

Tucson

Wed 9/2

10:25 am-8:26 pm

2 stops8h 01m

Lambert-St Louis

Wed 9/9

3:34 pm-7:05 pm

1 stop5h 31m

$376
Quickest round-trip

TucsonSt. Louis

TUS Tucson - STL Lambert-St Louis

TUSSTL

Tucson

Mon 9/21

1:29 pm-8:38 pm

1 stop5h 09m

Lambert-St Louis

Wed 9/23

4:40 pm-8:35 pm

1 stop5h 55m

$385

TucsonSt. Louis

TUS Tucson - STL Lambert-St Louis

TUSSTL

Tucson

Thu 10/15

1:40 pm-8:36 pm

1 stop4h 56m

Lambert-St Louis

Tue 10/20

9:04 am-4:46 pm

2 stops9h 42m

$390

TucsonSt. Louis

TUS Tucson - STL Lambert-St Louis

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 Tucson - STL Lambert-St Louis

TUSSTL

Tucson

Sat 8/22

6:00 am-2:33 pm

1 stop6h 33m

Lambert-St Louis

Wed 8/26

7:00 am-12:18 pm

1 stop7h 18m

$537

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

4h 55m

Direct flights

None
The fastest flight from Tucson to St. Louis takes 4h 55m
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 55m.

  • 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
11,877 reviews
Search American Airlines flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
10,081 reviews
Search United Airlines flights
SouthwestPriceFrom $266Free CancellationRating
8.0
4,217 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
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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