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Cheap flights from Tucson to St. Louis from $174

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Tucson to St. Louis departing on 9/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Tucson to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
4:00 pm - 10:35 pm
TUS
-
STL
4h 35m
1 stop
Southwest Logo
5:35 am - 9:10 am
STL
-
TUS
5h 35m
1 stop
$252Southwest
Wed, Aug 12 - Tue, Aug 18
Southwest Logo
5:35 am - 4:25 pm
TUS
-
STL
8h 50m
2 stops
Southwest Logo
7:00 am - 9:55 am
STL
-
TUS
4h 55m
1 stop
$258Southwest
Wed, Aug 12 - Tue, Aug 18
Southwest Logo
5:35 am - 4:25 pm
TUS
-
STL
8h 50m
2 stops
Southwest Logo
2:45 pm - 8:35 pm
STL
-
TUS
7h 50m
2 stops
$263Southwest
Wed, Aug 12 - Tue, Aug 18
United Airlines Logo
1:30 pm - 8:59 pm
TUS
-
STL
6h 29m
1 stop
United Airlines Logo
4:30 pm - 9:42 pm
STL
-
TUS
6h 12m
1 stop
$278United Airlines
Wed, Nov 4 - Sat, Nov 7
Southwest Logo
4:20 pm - 10:00 pm
TUS
-
STL
4h 40m
1 stop
Southwest Logo
2:10 pm - 8:15 pm
STL
-
TUS
7h 05m
1 stop
$288Southwest
Wed, Nov 4 - Wed, Nov 18
Southwest Logo
6:10 am - 3:40 pm
TUS
-
STL
8h 30m
2 stops
Southwest Logo
5:30 pm - 10:15 pm
STL
-
TUS
5h 45m
1 stop
$294Southwest
Wed, Nov 4 - Wed, Nov 18
Southwest Logo
6:10 am - 3:40 pm
TUS
-
STL
8h 30m
2 stops
Southwest Logo
2:30 pm - 8:15 pm
STL
-
TUS
6h 45m
2 stops
$299Southwest
Wed, Nov 4 - Wed, Nov 18
Southwest Logo
2:00 pm - 11:10 pm
TUS
-
STL
7h 10m
1 stop
Southwest Logo
7:35 am - 1:30 pm
STL
-
TUS
7h 55m
1 stop
$300Southwest
Mon, Aug 17 - Wed, Aug 26
Southwest Logo
3:45 pm - 12:45 am
TUS
-
STL
7h 00m
1 stop
Southwest Logo
3:45 pm - 9:55 pm
STL
-
TUS
8h 10m
2 stops
$305Southwest
Mon, Aug 17 - Wed, Aug 26
Southwest Logo
7:25 am - 5:55 pm
TUS
-
STL
8h 30m
2 stops
Southwest Logo
2:20 pm - 9:40 pm
STL
-
TUS
9h 20m
2 stops
$311Southwest
Wed, Sep 9 - Mon, Sep 14

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Southwest flights from Tucson to St. Louis

Our best Southwest deals on Tucson to St. Louis flight tickets
Southwest
Aug 12
TUS4:00 pmTucson
4h 35m
1 stop
STL10:35 pmLambert-St Louis
Aug 18
STL5:35 amLambert-St Louis
5h 35m
1 stop
TUS9:10 amTucson
$252
Southwest
Aug 12
TUS5:35 amTucson
8h 50m
2 stops
STL4:25 pmLambert-St Louis
Aug 18
STL7:00 amLambert-St Louis
4h 55m
1 stop
TUS9:55 amTucson
$258
Southwest
Aug 12
TUS5:35 amTucson
8h 50m
2 stops
STL4:25 pmLambert-St Louis
Aug 18
STL2:45 pmLambert-St Louis
7h 50m
2 stops
TUS8:35 pmTucson
$263

American Airlines flights from Tucson to St. Louis

Our best American Airlines deals on Tucson to St. Louis flight tickets
American Airlines
Nov 19
TUS6:00 amTucson
5h 37m
1 stop
STL12:37 pmLambert-St Louis
Nov 23
STL11:39 amLambert-St Louis
5h 13m
1 stop
TUS3:52 pmTucson
$347
American Airlines
Jul 1
TUS1:49 pmTucson
8h 10m
2 stops
STL11:59 pmLambert-St Louis
Jul 8
STL9:44 amLambert-St Louis
7h 17m
1 stop
TUS3:01 pmTucson
$393
American Airlines
Jul 1
TUS12:31 pmTucson
9h 25m
1 stop
STL11:56 pmLambert-St Louis
Jul 8
STL9:44 amLambert-St Louis
7h 17m
1 stop
TUS3:01 pmTucson
$410

momondo Fare Finder

 
Customize your flight search to find flights from Tucson to St. Louis 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 June 11, 2026.
Use the filters below to find and compare flights from Tucson to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 8/12

4:00 pm-10:35 pm

1 stop4h 35m

Lambert-St Louis

Tue 8/18

5:35 am-9:10 am

1 stop5h 35m

$252

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 8/12

5:35 am-4:25 pm

2 stops8h 50m

Lambert-St Louis

Tue 8/18

7:00 am-9:55 am

1 stop4h 55m

$258

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 8/12

5:35 am-4:25 pm

2 stops8h 50m

Lambert-St Louis

Tue 8/18

2:45 pm-8:35 pm

2 stops7h 50m

$263

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 11/4

1:30 pm-8:59 pm

1 stop6h 29m

Lambert-St Louis

Sat 11/7

4:30 pm-9:42 pm

1 stop6h 12m

$278

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 11/4

4:20 pm-10:00 pm

1 stop4h 40m

Lambert-St Louis

Wed 11/18

2:10 pm-8:15 pm

1 stop7h 05m

$288

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 11/4

6:10 am-3:40 pm

2 stops8h 30m

Lambert-St Louis

Wed 11/18

5:30 pm-10:15 pm

1 stop5h 45m

$294

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 11/4

6:10 am-3:40 pm

2 stops8h 30m

Lambert-St Louis

Wed 11/18

2:30 pm-8:15 pm

2 stops6h 45m

$299

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Mon 8/17

2:00 pm-11:10 pm

1 stop7h 10m

Lambert-St Louis

Wed 8/26

7:35 am-1:30 pm

1 stop7h 55m

$300

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Mon 8/17

3:45 pm-12:45 am

1 stop7h 00m

Lambert-St Louis

Wed 8/26

3:45 pm-9:55 pm

2 stops8h 10m

$305

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 9/9

7:25 am-5:55 pm

2 stops8h 30m

Lambert-St Louis

Mon 9/14

2:20 pm-9:40 pm

2 stops9h 20m

$311

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 St. Louis from

How to get the cheapest flight ticket from Tucson to St. Louis

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 Tucson and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, February is the cheapest month to fly from Tucson to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $287. The month of August is another great option to travel to St. Louis, with average flight prices from Tucson averaging around $304.

How far in advance should I book a flight from Tucson to St. Louis?

You are more likely to see cheaper flights to St. Louis from Tucson when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $415 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Tucson for as low as $338 on momondo.

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

As of June 2026, prices for Tucson to St. Louis flights are approximately 16% more expensive when compared to flights at the same time last year.

When to book flights from Tucson to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Tucson to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Tucson to St. Louis (TUS to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Tucson to St. Louis

Fastest flight time

4h 35m

Direct flights

None
The fastest flight from Tucson to St. Louis takes 4h 35m
There are no direct flights from Tucson to St. Louis. There are no popular flight routes from Tucson to St. Louis.
Search flight deals

Frequently asked questions about flying from Tucson to St. Louis

  • How far is Tucson to Lambert-St Louis by plane?

    The distance between Tucson and Lambert-St Louis is about 1245.9 mi. A reasonable flight in good conditions will take 4h 35m.

  • When did momondo last update prices for flights from Tucson Airport to Lambert-St Louis Airport?

    Prices for flights from Tucson Airport to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Tucson Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Tucson Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Tucson Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Tucson to St. Louis?

Best airlines flying from Tucson to St. Louis

Compare and see reviews for airlines that fly from Tucson to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $134Free CancellationRating
7.9
8,399 reviews
Search Delta flights
American AirlinesPriceFrom $214Free CancellationRating
7.1
11,640 reviews
Search American Airlines flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
9,805 reviews
Search United Airlines flights
SouthwestPriceFrom $266Free CancellationRating
7.9
4,235 reviews
Search Southwest flights

  • Southwest Flights From Tucson to St. Louis

    Southwest flight deals from Tucson to St. Louis start from $266 round-trip. Over the 3 Southwest flights for this route in a normal week, average airfare is usually $476 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Alton
Wentzville
Fenton
Clayton
Farmington
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Tucson to St. Louis?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Tucson to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Tucson to St. Louis with flexible booking policies on momondo?

Flights from Tucson to St. Louis 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 Tucson to St. Louis?

Once all potential Tucson to St. Louis 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 Tucson to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Tucson to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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