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Cheap flights from St. Louis to Tucson from $129

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Tucson departing on 9/15. 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 St. Louis to Tucson

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:30 pm - 9:42 pmSTL  Lambert-St Louis-TUS Tucson
6h 12m1 stop Denver Intl
United Airlines Logo
1:30 pm - 8:59 pmTUS  Tucson-STL Lambert-St Louis
6h 29m1 stop Denver Intl
$257United Airlines
Thu, Jan 7 - Sat, Jan 16
Southwest Logo
5:05 am - 1:20 pmSTL  Lambert-St Louis-TUS Tucson
9h 15m1 stop Los Angeles
Southwest Logo
11:30 am - 6:15 pmTUS  Tucson-STL Lambert-St Louis
5h 45m1 stop Denver Intl
$257Southwest
Thu, Nov 5 - Sat, Nov 7
American Airlines Logo
8:03 am - 11:11 amSTL  Lambert-St Louis-TUS Tucson
5h 08m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
4:07 pm - 11:56 pmTUS  Tucson-STL Lambert-St Louis
6h 49m1 stop Phoenix Sky Harbor Intl
$257American Airlines
Thu, Oct 29 - Mon, Nov 2
American Airlines Logo
3:34 pm - 8:35 pmSTL  Lambert-St Louis-TUS Tucson
7h 01m1 stop Dallas/Fort Worth
American Airlines Logo
8:00 am - 6:04 pmTUS  Tucson-STL Lambert-St Louis
8h 04m1 stop Dallas/Fort Worth
$257American Airlines
Thu, Sep 10 - Wed, Sep 16
Southwest Logo
2:05 pm - 8:40 pmSTL  Lambert-St Louis-TUS Tucson
8h 35m2 stops Dallas Love Field Denver Intl
Southwest Logo
3:45 pm - 12:50 amTUS  Tucson-STL Lambert-St Louis
7h 05m1 stop Los Angeles
$262Southwest
Sat, Sep 12 - Thu, Sep 17
Southwest Logo
8:30 am - 1:45 pmSTL  Lambert-St Louis-TUS Tucson
7h 15m2 stops Omaha Eppley Airfield Las Vegas Harry Reid Intl
Southwest Logo
3:35 pm - 10:50 pmTUS  Tucson-STL Lambert-St Louis
5h 15m1 stop Las Vegas Harry Reid Intl
$262Southwest
Sat, Sep 26 - Sat, Oct 3
United Airlines Logo
12:59 pm - 8:35 pmSTL  Lambert-St Louis-TUS Tucson
9h 36m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
6:30 am - 2:15 pmTUS  Tucson-STL Lambert-St Louis
5h 45m1 stop Houston George Bush Intcntl
$286United Airlines
Wed, Sep 9 - Sat, Sep 12
United Airlines Logo
9:00 am - 12:27 pmSTL  Lambert-St Louis-TUS Tucson
5h 27m1 stop Denver Intl
United Airlines Logo
11:11 am - 10:59 pmTUS  Tucson-STL Lambert-St Louis
9h 48m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$286United Airlines
Wed, Sep 9 - Sat, Sep 12
Delta Logo
5:00 pm - 9:46 pmSTL  Lambert-St Louis-TUS Tucson
6h 46m1 stop Salt Lake City
Delta Logo
6:00 am - 2:33 pmTUS  Tucson-STL Lambert-St Louis
6h 33m1 stop Atlanta Hartsfield-Jackson
$330Delta
Tue, Sep 1 - Sun, Sep 6
Delta Logo
5:00 pm - 9:46 pmSTL  Lambert-St Louis-TUS Tucson
6h 46m1 stop Salt Lake City
Delta Logo
6:00 am - 2:33 pmTUS  Tucson-STL Lambert-St Louis
6h 33m1 stop Atlanta Hartsfield-Jackson
$348Delta
Tue, Sep 1 - Sun, Sep 6

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American Airlines flights from St. Louis to Tucson

Our best American Airlines deals on St. Louis to Tucson flight tickets
American Airlines
Sep 19
STL5:43 amLambert-St Louis
7h 17m
1 stop
TUS11:00 amTucson
Sep 22
TUS2:04 pmTucson
4h 48m
1 stop
STL8:52 pmLambert-St Louis
$257
American Airlines
Sep 8
STL5:42 amLambert-St Louis
5h 02m
1 stop
TUS8:44 amTucson
Sep 12
TUS7:00 amTucson
5h 44m
1 stop
STL2:44 pmLambert-St Louis
$258
American Airlines
Sep 9
STL7:00 amLambert-St Louis
6h 00m
1 stop
TUS11:00 amTucson
Sep 12
TUS12:27 pmTucson
6h 17m
1 stop
STL8:44 pmLambert-St Louis
$281

Southwest flights from St. Louis to Tucson

Our best Southwest deals on St. Louis to Tucson flight tickets
Southwest
Sep 12
STL2:05 pmLambert-St Louis
8h 35m
2 stops
TUS8:40 pmTucson
Sep 17
TUS3:45 pmTucson
7h 05m
1 stop
STL12:50 amLambert-St Louis
$262
Southwest
Oct 30
STL6:05 amLambert-St Louis
5h 30m
1 stop
TUS9:35 amTucson
Nov 2
TUS6:10 pmTucson
5h 05m
1 stop
STL12:15 amLambert-St Louis
$275
Southwest
Oct 3
STL4:40 pmLambert-St Louis
6h 55m
1 stop
TUS9:35 pmTucson
Oct 8
TUS5:15 pmTucson
6h 00m
1 stop
STL1:15 amLambert-St Louis
$276

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Tucson 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 16, 2026.
Use the filters below to find and compare flights from St. Louis to Tucson that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Thu 1/7

4:30 pm-9:42 pm

1 stop6h 12m

Tucson

Sat 1/16

1:30 pm-8:59 pm

1 stop6h 29m

$257

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Thu 11/5

5:05 am-1:20 pm

1 stop9h 15m

Tucson

Sat 11/7

11:30 am-6:15 pm

1 stop5h 45m

$257
Quickest round-trip

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Thu 10/29

8:03 am-11:11 am

1 stop5h 08m

Tucson

Mon 11/2

4:07 pm-11:56 pm

1 stop6h 49m

$257

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Thu 9/10

3:34 pm-8:35 pm

1 stop7h 01m

Tucson

Wed 9/16

8:00 am-6:04 pm

1 stop8h 04m

$257

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Sat 9/12

2:05 pm-8:40 pm

2 stops8h 35m

Tucson

Thu 9/17

3:45 pm-12:50 am

1 stop7h 05m

$262

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Sat 9/26

8:30 am-1:45 pm

2 stops7h 15m

Tucson

Sat 10/3

3:35 pm-10:50 pm

1 stop5h 15m

$262

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Wed 9/9

12:59 pm-8:35 pm

2 stops9h 36m

Tucson

Sat 9/12

6:30 am-2:15 pm

1 stop5h 45m

$286

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Wed 9/9

9:00 am-12:27 pm

1 stop5h 27m

Tucson

Sat 9/12

11:11 am-10:59 pm

2 stops9h 48m

$286

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Tue 9/1

5:00 pm-9:46 pm

1 stop6h 46m

Tucson

Sun 9/6

6:00 am-2:33 pm

1 stop6h 33m

$330

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Tue 9/1

5:00 pm-9:46 pm

1 stop6h 46m

Tucson

Sun 9/6

6:00 am-2:33 pm

1 stop6h 33m

$348

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 Tucson from

How to get the cheapest flight ticket from St. Louis to Tucson

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 St. Louis and Tucson?

Prices are currently low for flights on this route.

Typical prices usually range from $333 to $746.
The lowest price recently found on this route was $257.

What is the cheapest month to fly to Tucson?

In general, October is the cheapest month to fly from St. Louis to Tucson. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $289. If you don’t want to visit Tucson in October, then you should wait until December to fly from St. Louis, when ticket prices are also cheap, with an average price of $335.

How far in advance should I book a flight from St. Louis to Tucson?

You are more likely to see cheaper flights to Tucson from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Tucson for around $416 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Tucson from St. Louis for as low as $341 on momondo.

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

As of August 2026, prices for St. Louis to Tucson flights are approximately 28% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Tucson

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Tucson according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Tucson (STL to TUS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Tucson

Fastest flight time

5h 30m

Direct flights

None
The fastest flight from St. Louis to Tucson takes 5h 30m
There are no direct flights from St. Louis to Tucson. There are no popular flight routes from St. Louis to Tucson.
Search flight deals

Frequently asked questions about flying from St. Louis to Tucson

  • How far is Lambert-St Louis to Tucson by plane?

    The straight-line distance from Lambert-St Louis to Tucson is 1245.9 mi. Typically, this will take 5h 30m by plane in normal conditions.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Tucson Airport?

    Prices for flights from Lambert-St Louis Airport to Tucson Airport were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Tucson Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Tucson Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Tucson Airport.

  • What documentation or ID do you need to fly to Tucson Airport?

    The travel and health documents you'll need for your trip to Tucson Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Tucson Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Tucson?

Best airlines flying from St. Louis to Tucson

Compare and see reviews for airlines that fly from St. Louis to Tucson with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $260Free CancellationRating
7.4
10,105 reviews
Search United Airlines flights
American AirlinesPriceFrom $278Free CancellationRating
7.1
11,947 reviews
Search American Airlines flights
SouthwestPriceFrom $307Free CancellationRating
8.0
4,217 reviews
Search Southwest flights

Traveling to a place near Tucson?

Book flights to Tucson if you plan to visit one of these locations
Tombstone
Bisbee
Sierra Vista
Oro Valley
Green Valley
Douglas

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Tucson?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Tucson from St. Louis.

Can I find flights from St. Louis to Tucson with flexible booking policies on momondo?

Flights from St. Louis to Tucson 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 St. Louis to Tucson?

Once all potential St. Louis to Tucson 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 St. Louis to Tucson right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Tucson now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Tucson and let you know when they change.

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