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Cheap flights from St. Louis to Tucson from $174

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 11/19. 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
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.
Southwest Logo
7:00 am - 1:35 pm
STL
-
TUS
8h 35m
1 stop
Southwest Logo
4:35 pm - 11:45 pm
TUS
-
STL
5h 10m
1 stop
$288Southwest
Tue, Oct 20 - Tue, Oct 27
Southwest Logo
7:00 am - 1:35 pm
STL
-
TUS
8h 35m
1 stop
Southwest Logo
5:45 am - 3:35 pm
TUS
-
STL
7h 50m
2 stops
$294Southwest
Tue, Oct 20 - Tue, Oct 27
Southwest Logo
6:45 am - 1:35 pm
STL
-
TUS
8h 50m
2 stops
Southwest Logo
7:00 am - 5:45 pm
TUS
-
STL
8h 45m
2 stops
$299Southwest
Tue, Oct 20 - Tue, Oct 27
Southwest Logo
9:45 am - 1:45 pm
STL
-
TUS
6h 00m
1 stop
Southwest Logo
10:40 am - 7:05 pm
TUS
-
STL
6h 25m
2 stops
$353Southwest
Sat, Aug 22 - Sat, Sep 5
Southwest Logo
2:05 pm - 8:35 pm
STL
-
TUS
8h 30m
2 stops
Southwest Logo
10:40 am - 7:05 pm
TUS
-
STL
6h 25m
2 stops
$358Southwest
Sat, Aug 22 - Sat, Sep 5
Frontier Logo
8:10 pm - 2:30 pm
STL
-
TUS
20h 20m
1 stop
Frontier Logo
3:25 pm - 7:15 pm
TUS
-
STL
25h 50m
1 stop
$361Frontier
Wed, Oct 21 - Sun, Oct 25
Delta Logo
3:58 pm - 9:49 pm
STL
-
TUS
7h 51m
1 stop
Delta Logo
1:49 pm - 10:15 pm
TUS
-
STL
6h 26m
1 stop
$367Delta
Wed, Jul 15 - Tue, Jul 21
Southwest Logo
12:30 pm - 6:55 pm
STL
-
TUS
7h 25m
1 stop
Southwest Logo
3:45 pm - 12:25 am
TUS
-
STL
7h 40m
1 stop
$378Southwest
Fri, Nov 6 - Mon, Nov 9
American Airlines Logo
5:32 am - 11:07 am
STL
-
TUS
7h 35m
2 stops
American Airlines Logo
3:57 pm - 11:58 pm
TUS
-
STL
6h 01m
1 stop
$384American Airlines
Wed, Jul 15 - Tue, Jul 21
Delta Logo
2:30 pm - 9:29 pm
STL
-
TUS
8h 59m
1 stop
Delta Logo
1:49 pm - 11:53 pm
TUS
-
STL
8h 04m
1 stop
$387Delta
Wed, Jul 15 - Tue, Jul 21

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United Airlines flights from St. Louis to Tucson

Our best United Airlines deals on St. Louis to Tucson flight tickets
United Airlines
Sep 1
STL4:40 pmLambert-St Louis
5h 50m
1 stop
TUS8:30 pmTucson
Sep 6
TUS1:29 pmTucson
5h 17m
1 stop
STL8:46 pmLambert-St Louis
$312
United Airlines
Sep 1
STL8:00 amLambert-St Louis
11h 03m
2 stops
TUS5:03 pmTucson
Sep 6
TUS5:30 amTucson
5h 10m
1 stop
STL12:40 pmLambert-St Louis
$317
United Airlines
Oct 14
STL1:29 pmLambert-St Louis
9h 41m
2 stops
TUS9:10 pmTucson
Oct 21
TUS1:40 pmTucson
4h 56m
1 stop
STL8:36 pmLambert-St Louis
$450

American Airlines flights from St. Louis to Tucson

Our best American Airlines deals on St. Louis to Tucson flight tickets
American Airlines
Sep 1
STL5:42 amLambert-St Louis
5h 02m
1 stop
TUS8:44 amTucson
Sep 6
TUS3:05 pmTucson
6h 37m
2 stops
STL11:42 pmLambert-St Louis
$355
American Airlines
Jul 15
STL5:32 amLambert-St Louis
7h 35m
2 stops
TUS11:07 amTucson
Jul 21
TUS3:57 pmTucson
6h 01m
1 stop
STL11:58 pmLambert-St Louis
$384
American Airlines
Jul 15
STL5:32 amLambert-St Louis
7h 35m
2 stops
TUS11:07 amTucson
Jul 21
TUS3:57 pmTucson
6h 01m
1 stop
STL11:58 pmLambert-St Louis
$392

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 June 9, 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 - TUS

STLTUS

Lambert-St Louis

Tue 10/20

7:00 am-1:35 pm

1 stop8h 35m

Tucson

Tue 10/27

4:35 pm-11:45 pm

1 stop5h 10m

$288

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 10/20

7:00 am-1:35 pm

1 stop8h 35m

Tucson

Tue 10/27

5:45 am-3:35 pm

2 stops7h 50m

$294

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 10/20

6:45 am-1:35 pm

2 stops8h 50m

Tucson

Tue 10/27

7:00 am-5:45 pm

2 stops8h 45m

$299
Quickest round-trip

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 8/22

9:45 am-1:45 pm

1 stop6h 00m

Tucson

Sat 9/5

10:40 am-7:05 pm

2 stops6h 25m

$353

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 8/22

2:05 pm-8:35 pm

2 stops8h 30m

Tucson

Sat 9/5

10:40 am-7:05 pm

2 stops6h 25m

$358

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 10/21

8:10 pm-2:30 pm

1 stop20h 20m

Tucson

Sun 10/25

3:25 pm-7:15 pm

1 stop25h 50m

$361

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 7/15

3:58 pm-9:49 pm

1 stop7h 51m

Tucson

Tue 7/21

1:49 pm-10:15 pm

1 stop6h 26m

$367

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Fri 11/6

12:30 pm-6:55 pm

1 stop7h 25m

Tucson

Mon 11/9

3:45 pm-12:25 am

1 stop7h 40m

$378

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 7/15

5:32 am-11:07 am

2 stops7h 35m

Tucson

Tue 7/21

3:57 pm-11:58 pm

1 stop6h 01m

$384

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 7/15

2:30 pm-9:29 pm

1 stop8h 59m

Tucson

Tue 7/21

1:49 pm-11:53 pm

1 stop8h 04m

$387

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?

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 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 $385 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 June 2026, prices for St. Louis to Tucson flights are approximately 18% cheaper 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 35m

Direct flights

None
The fastest flight from St. Louis to Tucson takes 5h 35m
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 35m 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
9,796 reviews
Search United Airlines flights
American AirlinesPriceFrom $266Free CancellationRating
7.1
11,640 reviews
Search American Airlines flights
SouthwestPriceFrom $302Free CancellationRating
7.9
4,240 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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