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Cheap flights from St. Louis to Tucson from $137

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Tucson departing on 1/24. 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.
Frontier Logo
3:46 pm - 11:17 am
STL
-
TUS
20h 31m1 stop
Frontier Logo
12:12 pm - 2:46 pm
TUS
-
STL
25h 34m1 stop
$137Frontier
Sat, Jan 24 - Fri, Jan 30
American Airlines Logo
11:55 am - 6:14 pm
STL
-
TUS
7h 19m1 stop
American Airlines Logo
1:50 pm - 10:09 pm
TUS
-
STL
7h 19m1 stop
$159American Airlines
Wed, Feb 11 - Wed, Feb 18
American Airlines Logo
5:04 pm - 10:55 pm
STL
-
TUS
6h 51m1 stop
American Airlines Logo
9:00 am - 4:14 pm
TUS
-
STL
6h 14m1 stop
$180American Airlines
Thu, Jan 8 - Wed, Jan 14
Southwest Logo
1:15 pm - 8:50 pm
STL
-
TUS
8h 35m2 stops
Southwest Logo
12:05 pm - 8:35 pm
TUS
-
STL
7h 30m1 stop
$184Southwest
Wed, Feb 11 - Wed, Feb 18
American Airlines Logo
3:37 pm - 10:55 pm
STL
-
TUS
8h 18m1 stop
American Airlines Logo
2:50 pm - 10:55 pm
TUS
-
STL
7h 05m2 stops
$185American Airlines
Thu, Jan 8 - Wed, Jan 14
American Airlines Logo
11:46 am - 6:45 pm
STL
-
TUS
7h 59m1 stop
American Airlines Logo
5:56 pm - 12:05 am
TUS
-
STL
5h 09m1 stop
$197American Airlines
Sat, Feb 14 - Wed, Feb 18
American Airlines Logo
6:30 am - 12:19 pm
STL
-
TUS
6h 49m1 stop
American Airlines Logo
5:56 pm - 11:50 pm
TUS
-
STL
4h 54m1 stop
$199American Airlines
Tue, Feb 17 - Sat, Feb 21
American Airlines Logo
5:55 pm - 11:04 pm
STL
-
TUS
6h 09m1 stop
American Airlines Logo
5:56 pm - 11:50 pm
TUS
-
STL
4h 54m1 stop
$200American Airlines
Tue, Feb 17 - Sat, Feb 21
Southwest Logo
6:05 am - 11:15 am
STL
-
TUS
6h 10m1 stop
Southwest Logo
8:20 am - 3:00 pm
TUS
-
STL
5h 40m1 stop
$201Southwest
Thu, Jan 22 - Thu, Jan 29
Southwest Logo
1:15 pm - 8:50 pm
STL
-
TUS
8h 35m2 stops
Southwest Logo
7:50 am - 5:30 pm
TUS
-
STL
8h 40m2 stops
$209Southwest
Wed, Feb 11 - Wed, Feb 18

Frontier flights from St. Louis to Tucson

Our best Frontier deals on St. Louis to Tucson flight tickets
Frontier
Jan 24
STL3:46 pmLambert-St Louis
20h 31m
1 stop
TUS11:17 amTucson
Jan 30
TUS12:12 pmTucson
25h 34m
1 stop
STL2:46 pmLambert-St Louis
$137
Find similar
Frontier
Jan 22
STL10:01 pmLambert-St Louis
22h 54m
1 stop
TUS7:55 pmTucson
Jan 30
TUS12:12 pmTucson
5h 32m
1 stop
STL6:44 pmLambert-St Louis
$218
Find similar
Frontier
Feb 11
STL5:44 pmLambert-St Louis
28h 25m
1 stop
TUS9:09 pmTucson
Feb 19
TUS10:11 pmTucson
17h 38m
1 stop
STL4:49 pmLambert-St Louis
$246
Find similar

American Airlines flights from St. Louis to Tucson

Our best American Airlines deals on St. Louis to Tucson flight tickets
American Airlines
Feb 11
STL11:55 amLambert-St Louis
7h 19m
1 stop
TUS6:14 pmTucson
Feb 18
TUS1:50 pmTucson
7h 19m
1 stop
STL10:09 pmLambert-St Louis
$159
Find similar
American Airlines
Jan 8
STL5:04 pmLambert-St Louis
6h 51m
1 stop
TUS10:55 pmTucson
Jan 14
TUS9:00 amTucson
6h 14m
1 stop
STL4:14 pmLambert-St Louis
$180
Find similar
American Airlines
Jan 8
STL3:37 pmLambert-St Louis
8h 18m
1 stop
TUS10:55 pmTucson
Jan 14
TUS2:50 pmTucson
7h 05m
2 stops
STL10:55 pmLambert-St Louis
$185
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 December 4, 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 1/24

3:46 pm-11:17 am

1 stop20h 31m

Tucson

Fri 1/30

12:12 pm-2:46 pm

1 stop25h 34m

$137

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 2/11

11:55 am-6:14 pm

1 stop7h 19m

Tucson

Wed 2/18

1:50 pm-10:09 pm

1 stop7h 19m

$159

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 1/8

5:04 pm-10:55 pm

1 stop6h 51m

Tucson

Wed 1/14

9:00 am-4:14 pm

1 stop6h 14m

$180

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 2/11

1:15 pm-8:50 pm

2 stops8h 35m

Tucson

Wed 2/18

12:05 pm-8:35 pm

1 stop7h 30m

$184

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 1/8

3:37 pm-10:55 pm

1 stop8h 18m

Tucson

Wed 1/14

2:50 pm-10:55 pm

2 stops7h 05m

$185

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 2/14

11:46 am-6:45 pm

1 stop7h 59m

Tucson

Wed 2/18

5:56 pm-12:05 am

1 stop5h 09m

$197

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 2/17

6:30 am-12:19 pm

1 stop6h 49m

Tucson

Sat 2/21

5:56 pm-11:50 pm

1 stop4h 54m

$199

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 2/17

5:55 pm-11:04 pm

1 stop6h 09m

Tucson

Sat 2/21

5:56 pm-11:50 pm

1 stop4h 54m

$200

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 1/22

6:05 am-11:15 am

1 stop6h 10m

Tucson

Thu 1/29

8:20 am-3:00 pm

1 stop5h 40m

$201

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 2/11

1:15 pm-8:50 pm

2 stops8h 35m

Tucson

Wed 2/18

7:50 am-5:30 pm

2 stops8h 40m

$209

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 $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 December 2025, prices for St. Louis to Tucson flights are approximately 19% 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 30m

Direct flights

None
The fastest flight from St. Louis to Tucson takes 5h 30m
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 14m 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
8,011 reviews
Search Delta flights
American AirlinesPriceFrom $272Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
SouthwestPriceFrom $274Free CancellationRating
8.0
4,250 reviews
Search Southwest flights
United AirlinesPriceFrom $288Free CancellationRating
7.4
9,066 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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