HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Tulum

$113+ Cheap flights from St. Louis (STL) to Tulum, Mexico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CUN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Tulum with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to Tulum are usually found in September or April, booked 54 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from St. Louis to Tulum

Keep the following information in mind while searching for St. Louis to Tulum flight deals. Data was last updated September 11, 2025.

Round-trip from

$244
(Cheapflightsfares)

One-way from

$113
(Cheapflightsfares)

Popular in

March

Cheapest in

September

Average price

$398
From Lambert-St Louis to Tulum
Search Deals
One-way flight from Lambert-St Louis to Tulum
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from St. Louis to Tulum

Cheapest flights from St. Louis to Tulum
Explore the most affordable flight options available from St. Louis to Tulum. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:22 amSTL - CUN
Nonstop3h 13mFrontier
Sun 11/23:45 pmCUN - STL
Nonstop3h 15mFrontier
Deal found 9/10$244
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3010:21 amSTL - CUN
Nonstop3h 13mFrontier
Fri 10/32:49 pmCUN - STL
Nonstop3h 21mFrontier
Deal found 9/9$248
This Cheapflightsfares deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2910:21 amSTL - CUN
Nonstop3h 13mFrontier
Tue 9/302:49 pmCUN - STL
Nonstop3h 21mFrontier
Deal found 9/9$278
This Cheapflightsfares deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2610:21 amSTL - CUN
Nonstop3h 13mFrontier
Tue 9/302:49 pmCUN - STL
Nonstop3h 21mFrontier
Deal found 9/9$281
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2410:21 amSTL - CUN
Nonstop3h 13mFrontier
Wed 10/12:49 pmCUN - STL
Nonstop3h 21mFrontier
Deal found 9/9$282
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/410:17 amSTL - CUN
Nonstop3h 13mFrontier
Tue 11/183:45 pmCUN - STL
Nonstop3h 15mFrontier
Deal found 9/11$283
This Cheapflightsfares deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/310:17 amSTL - CUN
Nonstop3h 13mFrontier
Fri 11/143:45 pmCUN - STL
Nonstop3h 15mFrontier
Deal found 9/11$284
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3010:21 amSTL - CUN
Nonstop3h 13mMultiple Airlines
Sat 10/49:54 amCUN - STL
1 stop24h 00mMultiple Airlines
Deal found 9/9$285
This Priceline deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/306:00 amSTL - CUN
Nonstop3h 18mFrontier
Fri 12/51:01 pmCUN - STL
Nonstop3h 25mFrontier
Deal found 9/10$287
This Frontier deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/310:17 amSTL - CUN
Nonstop3h 13mFrontier
Thu 11/133:45 pmCUN - STL
Nonstop3h 15mFrontier
Deal found 9/11$289
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/210:17 amSTL - CUN
Nonstop3h 13mFrontier
Thu 11/63:45 pmCUN - STL
Nonstop3h 15mFrontier
Deal found 9/11$290
This Expedia deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2910:21 amSTL - CUN
Nonstop3h 13mFrontier
Fri 10/32:49 pmCUN - STL
Nonstop3h 21mFrontier
Deal found 9/9$292

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Tulum 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from St. Louis to Tulum that are best for you.

Fly from

St. Louis

Fly to

Tulum

Route

Depart

Return

Price

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sun 10/26

10:22 am-1:35 pm

Nonstop3h 13m

Cancun

Sun 11/2

3:45 pm-6:00 pm

Nonstop3h 15m

$244

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Mon 10/13

10:22 am-1:35 pm

Nonstop3h 13m

Cancun

Sat 10/18

1:49 pm-10:02 am

1 stop20h 13m

$312

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Wed 9/24

4:05 pm-7:40 pm

1 stop27h 35m

Cancun

Wed 10/1

2:49 pm-6:10 pm

Nonstop3h 21m

$315

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 12/2

6:06 pm-12:30 pm

2 stops17h 24m

Cancun

Wed 12/10

4:15 pm-11:28 pm

1 stop8h 13m

$340

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 10/7

10:22 am-1:35 pm

Nonstop3h 13m

Cancun

Tue 10/14

2:50 pm-6:07 pm

Nonstop3h 17m

$360

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sun 11/30

6:00 am-10:18 am

Nonstop3h 18m

Cancun

Fri 12/5

1:35 pm-1:53 pm

1 stop25h 18m

$366

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Thu 12/4

7:05 am-9:20 pm

1 stop13h 15m

Cancun

Tue 12/9

8:00 am-1:00 pm

1 stop6h 00m

$381

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sat 11/1

4:33 pm-9:04 am

1 stop16h 31m

Cancun

Sat 11/8

11:57 am-11:09 am

1 stop24h 12m

$381

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 11/4

10:17 am-2:30 pm

Nonstop3h 13m

Cancun

Sun 11/9

6:00 pm-9:07 am

3 stops40h 07m

$421

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Wed 11/19

1:55 pm-9:20 pm

1 stop6h 25m

Cancun

Tue 11/25

8:00 am-1:00 pm

1 stop6h 00m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 results
1
2

Best time to book a flight from St. Louis to Tulum

Have a flexible travel schedule? Discover the best time to fly to Tulum from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Tulum

How far ahead should I book a flight from St. Louis to Tulum?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Tulum. Price data was last updated on August 29, 2025.

The price you pay for your flight from St. Louis to Tulum may vary depending on when you book. For the best chance of a lower fare, look to book 54 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from St. Louis to Tulum?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Tulum (average of $360). Flying from St. Louis to Tulum in March is currently the most expensive (average of $492). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to TU9?

Find hourly flight availability from St. Louis to Tulum. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Tulum as you normally would.

What is the cheapest day to fly from St. Louis to Tulum?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Tulum. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their St. Louis to Tulum flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from St. Louis to Tulum

Explore weekly flight availability from St. Louis to Tulum. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from STL to TU9 are scheduled on a Monday (2 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from St. Louis to Tulum?

Reviews of airlines servicing Tulum

Get insights into the airlines that provide service to Tulum. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Tulum. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from St. Louis to Tulum to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Volaris
6.6
Okay
1,155 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Tulum. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Tulum?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Tulum. You should not have trouble finding flights to Tulum from Lambert-St Louis; the airport handles an average of 1 outbound flight to Tulum per day. You should also have plenty of airline options to choose from since 8 airlines have flights from the St. Louis airport to Tulum. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • How popular is this St. Louis to Tulum flight route?

    Flights from Lambert-St Louis to Tulum have been viewed 22 times in the past calendar month.

  • How long is the flight from St. Louis to Tulum?

    A quick flight from St. Louis to Tulum can take about 3h 13m. Frontier provides one of the quickest options available for as low as $244. Airlines will cover a distance of 1241 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest flights from St. Louis to Tulum?

    Looking for the cheapest flight from St. Louis to Tulum? While on average our users pay $301, our data indicates the cheapest price to be $138. The most popular route (Lambert-St Louis - Cancun), is priced around $244.

  • Can I find deals for flights from St. Louis to Tulum that include hotel bookings?

    Yes. In addition to deals on St. Louis to Tulum flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Tulum?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Tulum.

  • Can I find deals for business class flights from St. Louis to Tulum?

    Yes. Cheapflights offers flight deals from St. Louis to Tulum by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Tulum?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Tulum (average of $360). Flying from St. Louis to Tulum in March is currently the most expensive (average of $492). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 8 airlines flying from St. Louis to Tulum

Discover the top 8 airlines that operate flights from St. Louis to Tulum. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$130Average$293FlexibilityNo cancel feeOn-time65%
VolarisCheapest$174Average$364FlexibilityNo cancel feeOn-time79%
AeromexicoCheapest$252Average$513FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$258Average$467FlexibilityNo cancel feeOn-time62%
DeltaCheapest$360Average$523FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$376Average$603FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$478Average$632FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$516Average$672FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.