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Cheap flights from St. Louis to Tucson from $146

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 3/19. 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
Wed, Apr 8 - Wed, Apr 15
American Airlines Logo
6:11 pm - 9:43 pm
STL
-
TUS
5h 32m
1 stop
American Airlines Logo
5:05 pm - 11:59 pm
TUS
-
STL
4h 54m
1 stop
$307American Airlines
Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
11:15 am - 8:18 pm
STL
-
TUS
11h 03m
2 stops
United Airlines Logo
1:29 pm - 8:54 pm
TUS
-
STL
5h 25m
1 stop
$308United Airlines
Tue, Apr 14 - Tue, Apr 21
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
$312American Airlines
Tue, Apr 7 - Tue, Apr 14
Southwest Logo
7:10 am - 3:45 pm
STL
-
TUS
10h 35m
2 stops
Southwest Logo
12:45 pm - 11:15 pm
TUS
-
STL
8h 30m
2 stops
$313Southwest
Tue, Apr 14 - Tue, Apr 21
Delta Logo
4:41 pm - 9:51 pm
STL
-
TUS
7h 10m
1 stop
Delta Logo
4:56 pm - 12:25 am
TUS
-
STL
5h 29m
1 stop
$321Delta
Tue, Apr 14 - Wed, Apr 22
Delta Logo
6:19 am - 1:11 pm
STL
-
TUS
8h 52m
1 stop
Delta Logo
7:10 am - 5:26 pm
TUS
-
STL
8h 16m
1 stop
$323Delta
Sat, Apr 18 - Tue, Apr 21
Delta Logo
6:12 pm - 9:55 pm
STL
-
TUS
5h 43m
1 stop
Delta Logo
3:24 pm - 11:58 pm
TUS
-
STL
6h 34m
1 stop
$325Delta
Wed, Apr 1 - Mon, Apr 6
American Airlines Logo
5:20 am - 8:59 am
STL
-
TUS
5h 39m
1 stop
American Airlines Logo
2:15 pm - 10:59 pm
TUS
-
STL
6h 44m
2 stops
$328American Airlines
Tue, Apr 7 - Tue, Apr 14
Southwest Logo
2:45 pm - 8:55 pm
STL
-
TUS
8h 10m
1 stop
Southwest Logo
11:55 am - 1:50 am
TUS
-
STL
11h 55m
1 stop
$330Southwest
Wed, Apr 1 - Sat, Apr 4

Delta flights from St. Louis to Tucson

Our best Delta deals on St. Louis to Tucson flight tickets
Delta
Apr 14
STL4:41 pmLambert-St Louis
7h 10m
1 stop
TUS9:51 pmTucson
Apr 21
TUS12:51 pmTucson
6h 28m
1 stop
STL9:19 pmLambert-St Louis
$303
Delta
Apr 14
STL2:20 pmLambert-St Louis
9h 11m
1 stop
TUS9:31 pmTucson
Apr 21
TUS4:56 pmTucson
5h 29m
1 stop
STL12:25 amLambert-St Louis
$321
Delta
Apr 18
STL5:00 pmLambert-St Louis
6h 51m
1 stop
TUS9:51 pmTucson
Apr 22
TUS4:56 pmTucson
5h 29m
1 stop
STL12:25 amLambert-St Louis
$323

United Airlines flights from St. Louis to Tucson

Our best United Airlines deals on St. Louis to Tucson flight tickets
United Airlines
Apr 14
STL11:15 amLambert-St Louis
11h 03m
2 stops
TUS8:18 pmTucson
Apr 21
TUS1:29 pmTucson
5h 25m
1 stop
STL8:54 pmLambert-St Louis
$308
United Airlines
Apr 8
STL11:15 amLambert-St Louis
12h 07m
2 stops
TUS9:22 pmTucson
Apr 15
TUS7:15 amTucson
7h 41m
1 stop
STL4:56 pmLambert-St Louis
$388
United Airlines
Apr 7
STL9:10 amLambert-St Louis
13h 08m
2 stops
TUS8:18 pmTucson
Apr 14
TUS6:30 amTucson
12h 43m
2 stops
STL9:13 pmLambert-St Louis
$393

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 March 4, 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

Wed 4/8

6:29 am-1:00 pm

1 stop8h 31m

Tucson

Wed 4/15

7:10 am-5:26 pm

1 stop8h 16m

$303

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/7

6:11 pm-9:43 pm

1 stop5h 32m

Tucson

Tue 4/14

5:05 pm-11:59 pm

1 stop4h 54m

$307

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/14

11:15 am-8:18 pm

2 stops11h 03m

Tucson

Tue 4/21

1:29 pm-8:54 pm

1 stop5h 25m

$308

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

$312

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/14

7:10 am-3:45 pm

2 stops10h 35m

Tucson

Tue 4/21

12:45 pm-11:15 pm

2 stops8h 30m

$313

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/14

4:41 pm-9:51 pm

1 stop7h 10m

Tucson

Wed 4/22

4:56 pm-12:25 am

1 stop5h 29m

$321

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 4/18

6:19 am-1:11 pm

1 stop8h 52m

Tucson

Tue 4/21

7:10 am-5:26 pm

1 stop8h 16m

$323

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 4/1

6:12 pm-9:55 pm

1 stop5h 43m

Tucson

Mon 4/6

3:24 pm-11:58 pm

1 stop6h 34m

$325

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/7

5:20 am-8:59 am

1 stop5h 39m

Tucson

Tue 4/14

2:15 pm-10:59 pm

2 stops6h 44m

$328

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 4/1

2:45 pm-8:55 pm

1 stop8h 10m

Tucson

Sat 4/4

11:55 am-1:50 am

1 stop11h 55m

$330

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 $379 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 March 2026, prices for St. Louis to Tucson flights are approximately 5% 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 24m

Direct flights

None
The fastest flight from St. Louis to Tucson takes 5h 24m
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 24m 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
8,245 reviews
Search Delta flights
American AirlinesPriceFrom $266Free CancellationRating
7.1
11,378 reviews
Search American Airlines flights
SouthwestPriceFrom $274Free CancellationRating
8.0
4,304 reviews
Search Southwest flights
United AirlinesPriceFrom $287Free CancellationRating
7.4
9,382 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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