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Cheap flights from St. Louis to Tucson from $178

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 9/6. 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.
American Airlines Logo
7:26 am - 11:37 amSTL  Lambert-St Louis-TUS Tucson
6h 11m1 stop Chicago O'Hare Intl
American Airlines Logo
3:54 pm - 11:43 pmTUS  Tucson-STL Lambert-St Louis
5h 49m1 stop Dallas/Fort Worth
$357American Airlines
Wed, Sep 9 - Wed, Sep 9
Southwest Logo
7:35 am - 1:30 pmSTL  Lambert-St Louis-TUS Tucson
7h 55m1 stop Phoenix Sky Harbor Intl
Southwest Logo
4:00 pm - 10:40 pmTUS  Tucson-STL Lambert-St Louis
4h 40m1 stop Phoenix Sky Harbor Intl
$357Southwest
Wed, Sep 9 - Wed, Sep 9
Delta Logo
5:00 pm - 9:46 pmSTL  Lambert-St Louis-TUS Tucson
6h 46m1 stop Salt Lake City
Delta Logo
6:00 am - 2:33 pmTUS  Tucson-STL Lambert-St Louis
6h 33m1 stop Atlanta Hartsfield-Jackson
$370Delta
Tue, Sep 1 - Sun, Sep 6
American Airlines Logo
12:45 pm - 5:47 pmSTL  Lambert-St Louis-TUS Tucson
7h 02m1 stop Dallas/Fort Worth
American Airlines Logo
7:10 am - 2:45 pmTUS  Tucson-STL Lambert-St Louis
5h 35m1 stop Dallas/Fort Worth
$370American Airlines
Tue, Sep 1 - Sun, Sep 6
American Airlines Logo
7:00 am - 11:00 amSTL  Lambert-St Louis-TUS Tucson
6h 00m1 stop Dallas/Fort Worth
American Airlines Logo
3:54 pm - 11:43 pmTUS  Tucson-STL Lambert-St Louis
5h 49m1 stop Dallas/Fort Worth
$371American Airlines
Wed, Sep 9 - Wed, Sep 16
Southwest Logo
7:00 am - 1:30 pmSTL  Lambert-St Louis-TUS Tucson
8h 30m2 stops Denver Intl Phoenix Sky Harbor Intl
Southwest Logo
4:00 pm - 10:40 pmTUS  Tucson-STL Lambert-St Louis
4h 40m1 stop Phoenix Sky Harbor Intl
$376Southwest
Wed, Sep 9 - Wed, Sep 9
Southwest Logo
5:35 am - 9:10 amSTL  Lambert-St Louis-TUS Tucson
5h 35m1 stop Las Vegas Harry Reid Intl
Southwest Logo
11:10 am - 9:45 pmTUS  Tucson-STL Lambert-St Louis
8h 35m2 stops Denver Intl Chicago Midway
$382Southwest
Wed, Sep 9 - Wed, Sep 9
United Airlines Logo
3:12 pm - 9:10 pmSTL  Lambert-St Louis-TUS Tucson
7h 58m1 stop Houston George Bush Intcntl
United Airlines Logo
9:40 am - 4:37 pmTUS  Tucson-STL Lambert-St Louis
4h 57m1 stop Denver Intl
$385United Airlines
Tue, Sep 29 - Sat, Oct 3
United Airlines Logo
10:27 am - 4:46 pmSTL  Lambert-St Louis-TUS Tucson
8h 19m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
6:06 am - 2:10 pmTUS  Tucson-STL Lambert-St Louis
6h 04m1 stop Houston George Bush Intcntl
$390United Airlines
Tue, Sep 29 - Sat, Oct 3
Delta Logo
2:31 pm - 11:06 pmSTL  Lambert-St Louis-TUS Tucson
9h 35m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:40 pm - 11:56 pmTUS  Tucson-STL Lambert-St Louis
8h 16m1 stop Atlanta Hartsfield-Jackson
$431Delta
Thu, Nov 12 - Sun, Nov 15

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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
Sep 9
STL7:00 amLambert-St Louis
6h 00m
1 stop
TUS11:00 amTucson
Sep 16
TUS3:54 pmTucson
5h 49m
1 stop
STL11:43 pmLambert-St Louis
$371
American Airlines
Sep 1
STL8:36 amLambert-St Louis
7h 59m
2 stops
TUS2:35 pmTucson
Sep 6
TUS7:10 amTucson
5h 35m
1 stop
STL2:45 pmLambert-St Louis
$375
American Airlines
Sep 15
STL7:27 amLambert-St Louis
6h 10m
1 stop
TUS11:37 amTucson
Sep 22
TUS9:38 amTucson
6h 26m
1 stop
STL6:04 pmLambert-St Louis
$385

United Airlines flights from St. Louis to Tucson

Our best United Airlines deals on St. Louis to Tucson flight tickets
United Airlines
Sep 9
STL3:13 pmLambert-St Louis
8h 01m
1 stop
TUS9:14 pmTucson
Sep 13
TUS5:30 amTucson
5h 10m
1 stop
STL12:40 pmLambert-St Louis
$407
United Airlines
Sep 9
STL12:59 pmLambert-St Louis
9h 36m
2 stops
TUS8:35 pmTucson
Sep 13
TUS5:30 amTucson
5h 10m
1 stop
STL12:40 pmLambert-St Louis
$412
United Airlines
Oct 29
STL6:00 amLambert-St Louis
8h 24m
2 stops
TUS12:24 pmTucson
Nov 1
TUS7:30 amTucson
5h 43m
1 stop
STL2:13 pmLambert-St Louis
$426

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 August 5, 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 Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Wed 9/9

7:26 am-11:37 am

1 stop6h 11m

Tucson

Wed 9/9

3:54 pm-11:43 pm

1 stop5h 49m

$357

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Wed 9/9

7:35 am-1:30 pm

1 stop7h 55m

Tucson

Wed 9/9

4:00 pm-10:40 pm

1 stop4h 40m

$357

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Tue 9/1

5:00 pm-9:46 pm

1 stop6h 46m

Tucson

Sun 9/6

6:00 am-2:33 pm

1 stop6h 33m

$370

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Tue 9/1

12:45 pm-5:47 pm

1 stop7h 02m

Tucson

Sun 9/6

7:10 am-2:45 pm

1 stop5h 35m

$370
Quickest round-trip

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Wed 9/9

7:00 am-11:00 am

1 stop6h 00m

Tucson

Wed 9/16

3:54 pm-11:43 pm

1 stop5h 49m

$371

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Wed 9/9

7:00 am-1:30 pm

2 stops8h 30m

Tucson

Wed 9/9

4:00 pm-10:40 pm

1 stop4h 40m

$376

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Wed 9/9

5:35 am-9:10 am

1 stop5h 35m

Tucson

Wed 9/9

11:10 am-9:45 pm

2 stops8h 35m

$382

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Tue 9/29

3:12 pm-9:10 pm

1 stop7h 58m

Tucson

Sat 10/3

9:40 am-4:37 pm

1 stop4h 57m

$385

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Tue 9/29

10:27 am-4:46 pm

2 stops8h 19m

Tucson

Sat 10/3

6:06 am-2:10 pm

1 stop6h 04m

$390

St. LouisTucson

STL Lambert-St Louis - TUS Tucson

STLTUS

Lambert-St Louis

Thu 11/12

2:31 pm-11:06 pm

1 stop9h 35m

Tucson

Sun 11/15

2:40 pm-11:56 pm

1 stop8h 16m

$431

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?

Prices are currently typical for flights on this route.

Typical prices usually range from $333 to $746.
The lowest price recently found on this route was $357.

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 December to fly from St. Louis, when ticket prices are also cheap, with an average price of $335.

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 $421 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 $341 on momondo.

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

As of August 2026, prices for St. Louis to Tucson flights are approximately 28% 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

Fastest flight time

5h 25m

Direct flights

None
The fastest flight from St. Louis to Tucson takes 5h 25m
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 25m 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
10,060 reviews
Search United Airlines flights
American AirlinesPriceFrom $276Free CancellationRating
7.1
11,852 reviews
Search American Airlines flights
SouthwestPriceFrom $307Free CancellationRating
8.0
4,220 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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