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Cheap flights from St. Louis to Tucson from $94

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 12/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Frontier Logo
3:53 pm - 3:42 pmSTL-TUS
24h 49m2 stops
Frontier Logo
2:26 pm - 9:09 pmTUS-STL
29h 43m1 stop
$257Frontier
Find Deal
Fri, Nov 21 - Tue, Nov 25
Frontier Logo
1:16 pm - 6:26 pmSTL-TUS
30h 10m1 stop
Frontier Logo
6:08 pm - 12:12 pmTUS-STL
17h 04m2 stops
$260Frontier
Find Deal
Thu, Dec 4 - Thu, Dec 11
American Airlines Logo
11:46 am - 6:42 pmSTL-TUS
7h 56m1 stop
American Airlines Logo
5:04 pm - 11:21 pmTUS-STL
5h 17m1 stop
$267American Airlines
Find Deal
Tue, Feb 17 - Sat, Feb 21
American Airlines Logo
9:32 am - 3:56 pmSTL-TUS
7h 24m1 stop
American Airlines Logo
2:47 pm - 11:21 pmTUS-STL
7h 34m2 stops
$272American Airlines
Find Deal
Tue, Feb 17 - Sat, Feb 21
Delta Logo
5:28 pm - 11:45 pmSTL-TUS
7h 17m1 stop
Delta Logo
5:45 pm - 1:01 amTUS-STL
6h 16m1 stop
$277Delta
Find Deal
Wed, Dec 3 - Wed, Dec 10
Southwest Logo
5:00 am - 12:40 pmSTL-TUS
8h 40m2 stops
Southwest Logo
3:55 pm - 11:35 pmTUS-STL
6h 40m1 stop
$282Southwest
Find Deal
Wed, Dec 3 - Thu, Feb 19
Delta Logo
5:12 pm - 11:45 pmSTL-TUS
7h 33m1 stop
Delta Logo
6:45 am - 1:30 pmTUS-STL
5h 45m1 stop
$289Delta
Find Deal
Thu, Dec 4 - Tue, Dec 9
United Airlines Logo
1:35 pm - 9:38 pmSTL-TUS
9h 03m2 stops
United Airlines Logo
2:33 pm - 8:57 pmTUS-STL
5h 24m1 stop
$292United Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
Southwest Logo
5:10 pm - 12:25 amSTL-TUS
8h 15m1 stop
Southwest Logo
12:05 pm - 8:35 pmTUS-STL
7h 30m2 stops
$316Southwest
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Mon, Jan 5 - Thu, Jan 8
United Airlines Logo
1:35 pm - 9:38 pmSTL-TUS
9h 03m2 stops
United Airlines Logo
7:00 am - 3:40 pmTUS-STL
7h 40m2 stops
$321United Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11

Delta flights from St. Louis to Tucson

Our best Delta deals on St. Louis to Tucson flight tickets
Delta
Dec 3
STL5:28 pmLambert-St Louis
7h 17m
1 stop
TUS11:45 pmTucson
Dec 10
TUS5:45 pmTucson
6h 16m
1 stop
STL1:01 amLambert-St Louis
$277
Find similar
Delta
Dec 4
STL5:12 pmLambert-St Louis
7h 33m
1 stop
TUS11:45 pmTucson
Dec 9
TUS6:45 amTucson
5h 45m
1 stop
STL1:30 pmLambert-St Louis
$289
Find similar
Delta
Dec 4
STL5:12 pmLambert-St Louis
7h 33m
1 stop
TUS11:45 pmTucson
Dec 11
TUS1:49 pmTucson
8h 53m
1 stop
STL11:42 pmLambert-St Louis
$311
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Southwest flights from St. Louis to Tucson

Our best Southwest deals on St. Louis to Tucson flight tickets
Southwest
Dec 3
STL5:00 amLambert-St Louis
8h 40m
2 stops
TUS12:40 pmTucson
Feb 19
TUS3:55 pmTucson
6h 40m
1 stop
STL11:35 pmLambert-St Louis
$282
Find similar
Southwest
Jan 5
STL5:10 pmLambert-St Louis
8h 15m
1 stop
TUS12:25 amTucson
Jan 8
TUS12:05 pmTucson
7h 30m
2 stops
STL8:35 pmLambert-St Louis
$316
Find similar
Southwest
Dec 3
STL5:00 amLambert-St Louis
8h 40m
2 stops
TUS12:40 pmTucson
Feb 19
TUS7:50 amTucson
9h 00m
2 stops
STL5:50 pmLambert-St Louis
$343
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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 November 6, 2025.
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

Fri 11/21

3:53 pm-3:42 pm

2 stops24h 49m

Tucson

Tue 11/25

2:26 pm-9:09 pm

1 stop29h 43m

$257

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 12/4

1:16 pm-6:26 pm

1 stop30h 10m

Tucson

Thu 12/11

6:08 pm-12:12 pm

2 stops17h 04m

$260

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 2/17

11:46 am-6:42 pm

1 stop7h 56m

Tucson

Sat 2/21

5:04 pm-11:21 pm

1 stop5h 17m

$267

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 2/17

9:32 am-3:56 pm

1 stop7h 24m

Tucson

Sat 2/21

2:47 pm-11:21 pm

2 stops7h 34m

$272

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 12/3

5:28 pm-11:45 pm

1 stop7h 17m

Tucson

Wed 12/10

5:45 pm-1:01 am

1 stop6h 16m

$277

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 12/3

5:00 am-12:40 pm

2 stops8h 40m

Tucson

Thu 2/19

3:55 pm-11:35 pm

1 stop6h 40m

$282

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 12/4

5:12 pm-11:45 pm

1 stop7h 33m

Tucson

Tue 12/9

6:45 am-1:30 pm

1 stop5h 45m

$289

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 12/3

1:35 pm-9:38 pm

2 stops9h 03m

Tucson

Wed 12/10

2:33 pm-8:57 pm

1 stop5h 24m

$292

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 1/5

5:10 pm-12:25 am

1 stop8h 15m

Tucson

Thu 1/8

12:05 pm-8:35 pm

2 stops7h 30m

$316

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 12/4

1:35 pm-9:38 pm

2 stops9h 03m

Tucson

Thu 12/11

7:00 am-3:40 pm

2 stops7h 40m

$321

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 $309. 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 $333.

What is the cheapest day to depart on your flight to Tucson?

According to our data, Tuesday is the cheapest day to fly to Tucson from St. Louis. The lowest ticket price found for a Tuesday departure recently was $347. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Tucson for around $528.

What is the cheapest time of day to depart on your flight to Tucson?

At noon is the cheapest time of day to fly from St. Louis to Tucson when you can find flight prices for as low as $383. Flying to Tucson at noon is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $408.

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 $368 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 $200 on momondo.

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

As of November 2025, prices for St. Louis to Tucson flights are approximately 42% 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

Direct flights

None
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 22m 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 $256Free CancellationRating
7.9
8,001 reviews
Search Delta flights
American AirlinesPriceFrom $273Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
SouthwestPriceFrom $274Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
United AirlinesPriceFrom $289Free CancellationRating
7.4
9,007 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
Nogales
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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