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Cheap flights from St. Louis to Tucson from $154

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 3/11. 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
0 bags

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Find the cheapest flights from St. Louis to Tucson

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:29 am - 1:00 pm
STL
-
TUS
8h 31m
1 stop
Delta Logo
7:10 am - 5:26 pm
TUS
-
STL
8h 16m
1 stop
$303Delta
Tue, Apr 7 - Tue, Apr 14
Delta Logo
7:03 am - 11:30 am
STL
-
TUS
6h 27m
1 stop
Delta Logo
7:10 am - 5:26 pm
TUS
-
STL
8h 16m
1 stop
$307Delta
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
5:21 pm - 11:59 pm
STL
-
TUS
8h 38m
1 stop
American Airlines Logo
2:15 pm - 10:59 pm
TUS
-
STL
6h 44m
2 stops
$308American Airlines
Tue, Apr 7 - Tue, Apr 14
Frontier Logo
11:32 am - 12:43 pm
STL
-
TUS
27h 11m
2 stops
Frontier Logo
11:49 am - 11:19 am
TUS
-
STL
21h 30m
1 stop
$311Frontier
Wed, Mar 11 - Sun, Mar 15
American Airlines Logo
6:11 pm - 9:43 pm
STL
-
TUS
5h 32m
1 stop
American Airlines Logo
2:15 pm - 10:59 pm
TUS
-
STL
6h 44m
2 stops
$312American Airlines
Tue, Apr 7 - Tue, Apr 14
Delta Logo
6:45 pm - 12:29 pm
STL
-
TUS
19h 44m
2 stops
Delta Logo
1:30 pm - 2:29 pm
TUS
-
STL
22h 59m
2 stops
$319Delta
Fri, May 1 - Mon, May 4
Delta Logo
4:21 pm - 9:41 pm
STL
-
TUS
7h 20m
1 stop
Delta Logo
5:04 pm - 12:21 am
TUS
-
STL
5h 17m
1 stop
$322Delta
Mon, Mar 23 - Wed, Mar 25
Delta Logo
2:27 pm - 9:30 pm
STL
-
TUS
9h 03m
1 stop
Delta Logo
1:27 pm - 11:59 pm
TUS
-
STL
8h 32m
1 stop
$325Delta
Tue, May 19 - Tue, May 26
Southwest Logo
7:30 pm - 12:15 am
STL
-
TUS
6h 45m
1 stop
Southwest Logo
5:15 am - 6:00 pm
TUS
-
STL
10h 45m
1 stop
$327Southwest
Sat, Mar 21 - Tue, Mar 24
Southwest Logo
8:45 am - 5:50 pm
STL
-
TUS
11h 05m
1 stop
Southwest Logo
7:30 am - 12:15 am
TUS
-
STL
14h 45m
2 stops
$338Southwest
Sat, Apr 18 - Mon, Apr 20

American Airlines flights from St. Louis to Tucson

Our best American Airlines deals on St. Louis to Tucson flight tickets
American Airlines
Apr 8
STL8:00 amLambert-St Louis
7h 11m
1 stop
TUS1:11 pmTucson
Apr 15
TUS3:47 pmTucson
5h 12m
1 stop
STL10:59 pmLambert-St Louis
$303
American Airlines
Apr 7
STL5:21 pmLambert-St Louis
8h 38m
1 stop
TUS11:59 pmTucson
Apr 14
TUS2:15 pmTucson
6h 44m
2 stops
STL10:59 pmLambert-St Louis
$308
American Airlines
Apr 7
STL6:11 pmLambert-St Louis
5h 32m
1 stop
TUS9:43 pmTucson
Apr 14
TUS2:15 pmTucson
6h 44m
2 stops
STL10:59 pmLambert-St Louis
$312

Southwest flights from St. Louis to Tucson

Our best Southwest deals on St. Louis to Tucson flight tickets
Southwest
Mar 21
STL7:30 pmLambert-St Louis
6h 45m
1 stop
TUS12:15 amTucson
Mar 24
TUS5:15 amTucson
10h 45m
1 stop
STL6:00 pmLambert-St Louis
$327
Southwest
Apr 18
STL8:45 amLambert-St Louis
11h 05m
1 stop
TUS5:50 pmTucson
Apr 20
TUS7:30 amTucson
14h 45m
2 stops
STL12:15 amLambert-St Louis
$338
Southwest
Apr 6
STL6:15 amLambert-St Louis
7h 10m
2 stops
TUS11:25 amTucson
Apr 13
TUS3:55 pmTucson
5h 55m
1 stop
STL11:50 pmLambert-St Louis
$346

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 February 22, 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

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/7

6:29 am-1:00 pm

1 stop8h 31m

Tucson

Tue 4/14

7:10 am-5:26 pm

1 stop8h 16m

$303

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/7

7:03 am-11:30 am

1 stop6h 27m

Tucson

Tue 4/14

7:10 am-5:26 pm

1 stop8h 16m

$307

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/7

5:21 pm-11:59 pm

1 stop8h 38m

Tucson

Tue 4/14

2:15 pm-10:59 pm

2 stops6h 44m

$308

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 3/11

11:32 am-12:43 pm

2 stops27h 11m

Tucson

Sun 3/15

11:49 am-11:19 am

1 stop21h 30m

$311

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/7

6:11 pm-9:43 pm

1 stop5h 32m

Tucson

Tue 4/14

2:15 pm-10:59 pm

2 stops6h 44m

$312

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Fri 5/1

6:45 pm-12:29 pm

2 stops19h 44m

Tucson

Mon 5/4

1:30 pm-2:29 pm

2 stops22h 59m

$319

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 3/23

4:21 pm-9:41 pm

1 stop7h 20m

Tucson

Wed 3/25

5:04 pm-12:21 am

1 stop5h 17m

$322

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 5/19

2:27 pm-9:30 pm

1 stop9h 03m

Tucson

Tue 5/26

1:27 pm-11:59 pm

1 stop8h 32m

$325

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 3/21

7:30 pm-12:15 am

1 stop6h 45m

Tucson

Tue 3/24

5:15 am-6:00 pm

1 stop10h 45m

$327

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 4/18

8:45 am-5:50 pm

1 stop11h 05m

Tucson

Mon 4/20

7:30 am-12:15 am

2 stops14h 45m

$338

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 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 August to fly from St. Louis, when ticket prices are also cheap, with an average price of $317.

How far in advance should I book a flight 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 $369 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 $305 on momondo.

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

As of February 2026, prices for St. Louis to Tucson flights are approximately 32% 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 43m

Direct flights

None
The fastest flight from St. Louis to Tucson takes 5h 43m
There are no direct flights from St. Louis to Tucson. There are no popular flight routes from St. Louis to Tucson.
Search flight deals

  • 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 43m 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
DeltaPriceFrom $143Free CancellationRating
7.9
8,241 reviews
Search Delta flights
American AirlinesPriceFrom $266Free CancellationRating
7.2
11,338 reviews
Search American Airlines flights
SouthwestPriceFrom $274Free CancellationRating
8.0
4,299 reviews
Search Southwest flights
United AirlinesPriceFrom $287Free CancellationRating
7.4
9,341 reviews
Search United Airlines 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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