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Cheap flights from St. Louis to Tucson from $97

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 11/2. 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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Cheap round-trip flights

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American Airlines Logo
9:35 am - 4:08 pmSTL-TUS
7h 33m1 stop
American Airlines Logo
8:34 am - 4:06 pmTUS-STL
6h 32m1 stop
$179American Airlines
Find Deal
Tue, Feb 17 - Sat, Feb 21
American Airlines Logo
1:20 pm - 7:02 pmSTL-TUS
6h 42m1 stop
American Airlines Logo
8:00 am - 4:34 pmTUS-STL
7h 34m1 stop
$190American Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
Southwest Logo
1:50 pm - 9:50 pmSTL-TUS
9h 00m2 stops
Southwest Logo
5:10 am - 2:25 pmTUS-STL
8h 15m1 stop
$295Southwest
Find Deal
Mon, Dec 15 - Thu, Dec 18
Southwest Logo
7:20 am - 12:45 pmSTL-TUS
6h 25m1 stop
Southwest Logo
5:50 am - 2:45 pmTUS-STL
7h 55m1 stop
$300Southwest
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Thu, Feb 26 - Sun, Mar 1
Delta Logo
5:17 pm - 11:59 pmSTL-TUS
7h 42m1 stop
Delta Logo
3:04 pm - 11:29 pmTUS-STL
7h 25m1 stop
$302Delta
Find Deal
Wed, Nov 26 - Thu, Dec 4
Delta Logo
2:21 pm - 10:29 pmSTL-TUS
9h 08m1 stop
Delta Logo
3:03 pm - 11:23 pmTUS-STL
7h 20m1 stop
$325Delta
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Fri, Nov 14 - Tue, Nov 18
United Airlines Logo
1:35 pm - 9:59 pmSTL-TUS
9h 24m2 stops
United Airlines Logo
12:01 pm - 6:47 pmTUS-STL
5h 46m1 stop
$330United Airlines
Find Deal
Fri, Nov 14 - Tue, Nov 18
Frontier Logo
2:42 pm - 1:35 pmSTL-TUS
23h 53m1 stop
Frontier Logo
2:20 pm - 9:07 amTUS-STL
17h 47m2 stops
$359Frontier
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Thu, Nov 6 - Mon, Nov 10
United Airlines Logo
7:41 am - 6:13 pmSTL-TUS
11h 32m2 stops
United Airlines Logo
2:42 pm - 8:26 pmTUS-STL
4h 44m1 stop
$364United Airlines
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Tue, Feb 17 - Sat, Feb 21
Frontier Logo
2:42 pm - 1:35 pmSTL-TUS
23h 53m1 stop
Frontier Logo
2:20 pm - 9:07 amTUS-STL
17h 47m2 stops
$366Frontier
Find Deal
Thu, Nov 13 - Mon, Nov 17

Frontier flights from St. Louis to Tucson

Our best Frontier deals on St. Louis to Tucson flight tickets
Frontier
Nov 6
STL2:42 pmLambert-St Louis
23h 53m
1 stop
TUS1:35 pmTucson
Nov 16
TUS10:58 amTucson
5h 24m
1 stop
STL5:22 pmLambert-St Louis
$304
Find similar
Frontier
Nov 6
STL6:22 pmLambert-St Louis
20h 13m
2 stops
TUS1:35 pmTucson
Nov 16
TUS2:20 pmTucson
28h 52m
1 stop
STL8:12 pmLambert-St Louis
$343
Find similar
Frontier
Nov 6
STL2:42 pmLambert-St Louis
23h 53m
1 stop
TUS1:35 pmTucson
Nov 10
TUS2:20 pmTucson
17h 47m
2 stops
STL9:07 amLambert-St Louis
$359
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American Airlines flights from St. Louis to Tucson

Our best American Airlines deals on St. Louis to Tucson flight tickets
American Airlines
Feb 17
STL9:35 amLambert-St Louis
7h 33m
1 stop
TUS4:08 pmTucson
Feb 21
TUS8:34 amTucson
6h 32m
1 stop
STL4:06 pmLambert-St Louis
$179
Find similar
American Airlines
Dec 4
STL1:20 pmLambert-St Louis
6h 42m
1 stop
TUS7:02 pmTucson
Dec 9
TUS8:00 amTucson
7h 34m
1 stop
STL4:34 pmLambert-St Louis
$190
Find similar
American Airlines
Dec 4
STL7:00 amLambert-St Louis
7h 44m
1 stop
TUS1:44 pmTucson
Dec 8
TUS9:09 amTucson
6h 25m
1 stop
STL4:34 pmLambert-St Louis
$201
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 October 23, 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

Tue 2/17

9:35 am-4:08 pm

1 stop7h 33m

Tucson

Sat 2/21

8:34 am-4:06 pm

1 stop6h 32m

$179

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 12/4

1:20 pm-7:02 pm

1 stop6h 42m

Tucson

Tue 12/9

8:00 am-4:34 pm

1 stop7h 34m

$190

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Mon 12/15

1:50 pm-9:50 pm

2 stops9h 00m

Tucson

Thu 12/18

5:10 am-2:25 pm

1 stop8h 15m

$295

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 2/26

7:20 am-12:45 pm

1 stop6h 25m

Tucson

Sun 3/1

5:50 am-2:45 pm

1 stop7h 55m

$300

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 11/26

5:17 pm-11:59 pm

1 stop7h 42m

Tucson

Thu 12/4

3:04 pm-11:29 pm

1 stop7h 25m

$302

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Fri 11/14

2:21 pm-10:29 pm

1 stop9h 08m

Tucson

Tue 11/18

3:03 pm-11:23 pm

1 stop7h 20m

$325

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Fri 11/14

1:35 pm-9:59 pm

2 stops9h 24m

Tucson

Tue 11/18

12:01 pm-6:47 pm

1 stop5h 46m

$330

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 11/6

2:42 pm-1:35 pm

1 stop23h 53m

Tucson

Mon 11/10

2:20 pm-9:07 am

2 stops17h 47m

$359

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 2/17

7:41 am-6:13 pm

2 stops11h 32m

Tucson

Sat 2/21

2:42 pm-8:26 pm

1 stop4h 44m

$364

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 11/13

2:42 pm-1:35 pm

1 stop23h 53m

Tucson

Mon 11/17

2:20 pm-9:07 am

2 stops17h 47m

$366

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 $370 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 October 2025, prices for St. Louis to Tucson flights are approximately 3% 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 4h 57m 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
7,982 reviews
Search Delta flights
American AirlinesPriceFrom $273Free CancellationRating
7.2
11,032 reviews
Search American Airlines flights
SouthwestPriceFrom $274Free CancellationRating
8.0
4,236 reviews
Search Southwest flights
United AirlinesPriceFrom $289Free CancellationRating
7.4
8,995 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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