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Cheap flights from St. Louis to Tucson from $122

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 9/21. 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

Frontier Logo
4:51 pm - 1:35 pmSTL-TUS
21h 44m1 stop
Frontier Logo
2:20 pm - 3:56 pmTUS-STL
24h 36m1 stop
$202Frontier
Find Deal
Sat, Nov 8 - Fri, Nov 14
Frontier Logo
2:42 pm - 12:35 pmSTL-TUS
23h 53m1 stop
Frontier Logo
9:21 am - 5:27 pmTUS-STL
7h 06m1 stop
$285Frontier
Find Deal
Thu, Oct 30 - Thu, Nov 6
United Airlines Logo
1:40 pm - 5:08 pmSTL-TUS
5h 28m1 stop
United Airlines Logo
7:30 am - 3:47 pmTUS-STL
6h 17m1 stop
$287United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 28
Southwest Logo
5:20 pm - 9:30 pmSTL-TUS
6h 10m1 stop
Southwest Logo
1:50 pm - 12:30 amTUS-STL
8h 40m2 stops
$292Southwest
Find Deal
Tue, Oct 14 - Tue, Oct 28
American Airlines Logo
9:43 am - 4:37 pmSTL-TUS
8h 54m2 stops
American Airlines Logo
5:03 pm - 10:58 pmTUS-STL
4h 55m1 stop
$295American Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Southwest Logo
5:55 am - 9:20 amSTL-TUS
5h 25m1 stop
Southwest Logo
5:35 am - 2:45 pmTUS-STL
7h 10m2 stops
$297Southwest
Find Deal
Tue, Oct 14 - Tue, Oct 21
Delta Logo
3:59 pm - 11:30 pmSTL-TUS
8h 31m1 stop
Delta Logo
3:03 pm - 11:23 pmTUS-STL
7h 20m1 stop
$307Delta
Find Deal
Sat, Nov 8 - Mon, Nov 10
United Airlines Logo
1:40 pm - 8:59 pmSTL-TUS
9h 19m2 stops
United Airlines Logo
1:30 pm - 8:46 pmTUS-STL
5h 16m1 stop
$312United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
American Airlines Logo
5:20 am - 8:54 amSTL-TUS
5h 34m1 stop
American Airlines Logo
2:59 pm - 11:57 pmTUS-STL
6h 58m1 stop
$317American Airlines
Find Deal
Sat, Oct 18 - Mon, Oct 20
Delta Logo
5:12 pm - 11:59 pmSTL-TUS
7h 47m1 stop
Delta Logo
12:23 pm - 7:06 pmTUS-STL
5h 43m1 stop
$337Delta
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Wed, Nov 26 - Thu, Dec 4

Alaska Airlines flights from St. Louis to Tucson

Our best Alaska Airlines deals on St. Louis to Tucson flight tickets
Alaska Airlines
Nov 8
STL7:00 amLambert-St Louis
28h 44m
2 stops
TUS10:44 amTucson
Nov 10
TUS11:40 amTucson
26h 38m
2 stops
STL3:18 pmLambert-St Louis
$433
Find similar
Alaska Airlines
Nov 8
STL7:00 amLambert-St Louis
17h 54m
1 stop
TUS11:54 pmTucson
Nov 10
TUS11:40 amTucson
26h 38m
2 stops
STL3:18 pmLambert-St Louis
$438
Find similar
Alaska Airlines
Nov 8
STL7:00 amLambert-St Louis
28h 44m
2 stops
TUS10:44 amTucson
Nov 10
TUS11:40 amTucson
26h 38m
2 stops
STL3:18 pmLambert-St Louis
$443
Find similar

American Airlines flights from St. Louis to Tucson

Our best American Airlines deals on St. Louis to Tucson flight tickets
American Airlines
Nov 1
STL9:43 amLambert-St Louis
8h 54m
2 stops
TUS4:37 pmTucson
Nov 8
TUS5:03 pmTucson
4h 55m
1 stop
STL10:58 pmLambert-St Louis
$295
Find similar
American Airlines
Oct 18
STL5:20 amLambert-St Louis
5h 34m
1 stop
TUS8:54 amTucson
Oct 20
TUS2:59 pmTucson
6h 58m
1 stop
STL11:57 pmLambert-St Louis
$317
Find similar
American Airlines
Nov 18
STL9:38 amLambert-St Louis
8h 30m
2 stops
TUS5:08 pmTucson
Dec 2
TUS5:55 pmTucson
4h 56m
1 stop
STL11:51 pmLambert-St Louis
$322
Find similar

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 September 17, 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

Sat 11/8

4:51 pm-1:35 pm

1 stop21h 44m

Tucson

Fri 11/14

2:20 pm-3:56 pm

1 stop24h 36m

$202

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 10/30

2:42 pm-12:35 pm

1 stop23h 53m

Tucson

Thu 11/6

9:21 am-5:27 pm

1 stop7h 06m

$285

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 10/14

1:40 pm-5:08 pm

1 stop5h 28m

Tucson

Tue 10/28

7:30 am-3:47 pm

1 stop6h 17m

$287

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 10/14

5:20 pm-9:30 pm

1 stop6h 10m

Tucson

Tue 10/28

1:50 pm-12:30 am

2 stops8h 40m

$292

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 11/1

9:43 am-4:37 pm

2 stops8h 54m

Tucson

Sat 11/8

5:03 pm-10:58 pm

1 stop4h 55m

$295

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 10/14

5:55 am-9:20 am

1 stop5h 25m

Tucson

Tue 10/21

5:35 am-2:45 pm

2 stops7h 10m

$297

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 11/8

3:59 pm-11:30 pm

1 stop8h 31m

Tucson

Mon 11/10

3:03 pm-11:23 pm

1 stop7h 20m

$307

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 10/14

1:40 pm-8:59 pm

2 stops9h 19m

Tucson

Tue 10/21

1:30 pm-8:46 pm

1 stop5h 16m

$312

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 10/18

5:20 am-8:54 am

1 stop5h 34m

Tucson

Mon 10/20

2:59 pm-11:57 pm

1 stop6h 58m

$317

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 11/26

5:12 pm-11:59 pm

1 stop7h 47m

Tucson

Thu 12/4

12:23 pm-7:06 pm

1 stop5h 43m

$337

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, August 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 $333. If you don’t want to visit Tucson in August, then you should wait until November to fly from St. Louis, when ticket prices are also cheap, with an average price of $361.

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 $380 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 September 2025, prices for St. Louis to Tucson flights are approximately 110% 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

Direct flights

None
There are no direct flights from St. Louis to Tucson. There are no popular flight routes from St. Louis to Tucson.
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  • 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 $266Free CancellationRating
7.9
7,961 reviews
Search Delta flights
SouthwestPriceFrom $274Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
American AirlinesPriceFrom $275Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $295Free CancellationRating
7.4
8,926 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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