$162+ Cheap flights from St. Louis (STL) to Cancún (CUN)
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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CUN
Sep 11 — Sep 181
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Cancún 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 Cancun are usually found in September or December, booked 27 days in advance, depart on a Wednesday or Monday and return on a Friday
Cheap flight deals from St. Louis to Cancún
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to CancúnExplore the most affordable flight options available from St. Louis to Cancún. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 12, 2026.
Explore the most affordable flight options available from St. Louis to Cancún. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:20 am -
2 stops24h 59m
Sun 9/271:51 pm -
1 stop23h 19m
Deal found 8/10![Multiple Airlines logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Sun 10/410:20 am -
2 stops23h 43m
Sat 10/103:41 pm -
1 stop17h 59m
Deal found 8/9![Multiple Airlines logo]()
$421
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/410:20 am -
2 stops23h 43m
Sun 10/113:41 pm -
1 stop17h 59m
Deal found 8/10![Multiple Airlines logo]()
$422
This Orbitz deal was found by Cheapflights users on 8/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/192:40 pm -
1 stop19h 10m
Sat 10/249:05 pm -
1 stop18h 21m
Deal found 8/10![Air Canada logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:58 pm -
2 stops28h 00m
Thu 9/171:51 pm -
1 stop23h 19m
Deal found 8/10![Multiple Airlines logo]()
$435
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:29 pm -
1 stop22h 08m
Thu 9/171:51 pm -
1 stop23h 19m
Deal found 8/10![Frontier logo]()
$439
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Fri 10/22:29 pm -
1 stop22h 08m
Sun 10/113:41 pm -
1 stop17h 59m
Deal found 8/9![Frontier logo]()
$443
This Southwest deal was found by Cheapflights users on 8/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:20 am -
Nonstop3h 05m
Tue 11/1712:35 pm -
1 stop10h 35m
Deal found 8/9![Southwest logo]()
$444
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:27 pm -
2 stops17h 52m
Thu 9/171:51 pm -
1 stop23h 19m
Deal found 8/10![Multiple Airlines logo]()
$445
This American Airlines deal was found by Cheapflights users on 8/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:32 am -
1 stop13h 28m
Tue 10/2012:45 pm -
1 stop9h 14m
Deal found 8/9![American Airlines logo]()
$446
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:29 pm -
1 stop22h 08m
Sat 10/103:41 pm -
1 stop17h 59m
Deal found 8/10![Frontier logo]()
$447
Best flights from St. Louis to CancúnDiscover carefully curated flight deals from St. Louis to Cancún that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 12, 2026.
Discover carefully curated flight deals from St. Louis to Cancún that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 12, 2026.
This Southwest deal was found by Cheapflights users on 8/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:45 am -
2 stops9h 15m
Fri 9/2511:35 am -
1 stop10h 20m
Deal found 8/10![Southwest logo]()
$453
This Delta deal was found by Cheapflights users on 8/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/52:31 pm -
1 stop5h 39m
Wed 12/96:04 am -
2 stops13h 09m
Deal found 8/8![Delta logo]()
$529
This Delta deal was found by Cheapflights users on 8/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:00 am -
1 stop7h 25m
Mon 10/2611:21 am -
2 stops12h 33m
Deal found 8/11![Delta logo]()
$529
This Southwest deal was found by Cheapflights users on 8/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/58:55 am -
2 stops7h 30m
Sat 2/1310:55 am -
Nonstop3h 10m
Deal found 8/11![Southwest logo]()
$571
This Delta deal was found by Cheapflights users on 8/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/312:20 pm -
1 stop7h 50m
Tue 12/81:30 pm -
2 stops10h 53m
Deal found 8/12![Delta logo]()
$534
This Delta deal was found by Cheapflights users on 8/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/212:20 pm -
1 stop7h 50m
Wed 12/911:18 am -
2 stops13h 38m
Deal found 8/8![Delta logo]()
$546
This Southwest deal was found by Cheapflights users on 8/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:05 am -
1 stop5h 55m
Mon 9/141:10 pm -
Nonstop3h 05m
Deal found 8/8![Southwest logo]()
$628
This Delta deal was found by Cheapflights users on 8/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:00 am -
1 stop7h 15m
Sun 10/2512:26 pm -
2 stops11h 28m
Deal found 8/8![Delta logo]()
$564
This Delta deal was found by Cheapflights users on 8/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/307:20 am -
2 stops11h 40m
Sat 2/64:30 pm -
1 stop8h 09m
Deal found 8/9![Delta logo]()
$574
This Delta deal was found by Cheapflights users on 8/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:20 am -
1 stop6h 36m
Wed 9/212:30 pm -
1 stop10h 51m
Deal found 8/10![Delta logo]()
$627
Last-minute flights from St. Louis to CancúnDiscover last-minute flight deals from St. Louis to Cancún. Data last updated August 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Cancún. Data last updated August 12, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:58 pm -
2 stops28h 00m
Thu 9/171:51 pm -
1 stop23h 19m
Deal found 8/10![Multiple Airlines logo]()
$435
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:27 pm -
2 stops17h 52m
Thu 9/171:51 pm -
1 stop23h 19m
Deal found 8/10![Multiple Airlines logo]()
$445
This Orbitz deal was found by Cheapflights users on 8/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:10 pm -
1 stop24h 00m
Mon 9/149:05 pm -
1 stop16h 55m
Deal found 8/10![Air Canada logo]()
$450
This Travelocity deal was found by Cheapflights users on 8/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:29 pm -
1 stop22h 08m
Mon 9/149:05 pm -
1 stop16h 55m
Deal found 8/11![Multiple Airlines logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:29 pm -
1 stop22h 08m
Thu 9/171:51 pm -
1 stop23h 19m
Deal found 8/10![Frontier logo]()
$439
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/122:40 pm -
1 stop19h 10m
Sat 9/199:05 pm -
1 stop16h 55m
Deal found 8/10![Air Canada logo]()
$454
This Southwest deal was found by Cheapflights users on 8/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:05 am -
1 stop8h 05m
Thu 9/241:00 pm -
1 stop9h 30m
Deal found 8/10![Southwest logo]()
$448
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:20 am -
2 stops24h 59m
Sun 9/271:51 pm -
1 stop23h 19m
Deal found 8/10![Multiple Airlines logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:29 pm -
1 stop22h 08m
Wed 9/305:25 am -
2 stops13h 52m
Deal found 8/10![Multiple Airlines logo]()
$447
One-way flights from St. Louis to CancúnSearch for one-way flight options from St. Louis to Cancún. Find affordable one-way fares based on user searches. Data last updated August 12, 2026.
Search for one-way flight options from St. Louis to Cancún. Find affordable one-way fares based on user searches. Data last updated August 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Mon 11/910:35 am -
3 stops46h 22m
Deal found 8/11![Multiple Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Fri 9/118:10 pm -
2 stops27h 48m
Deal found 8/12![Multiple Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Thu 9/1010:20 am -
2 stops34h 49m
Deal found 8/11![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/76:17 pm -
3 stops39h 46m
Deal found 8/7![Multiple Airlines logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Fri 10/910:35 am -
3 stops47h 28m
Deal found 8/11![Multiple Airlines logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Sun 9/65:27 pm -
2 stops40h 36m
Deal found 8/9![Multiple Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Sun 11/88:10 pm -
2 stops26h 47m
Deal found 8/9![Multiple Airlines logo]()
$187
Find flight deals from St. Louis to Cancún
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Cancún (CUN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $415 (Kiwi.com) |
One-way from | $162 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $524 |
Good round-trip deal | $554 or less |
Good one-way deal | $290 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Cancún 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 August 12, 2026.
Use the filters below to find and compare flights from St. Louis to Cancún that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisCancún
STL Lambert-St Louis - CUN Cancun
STLCUN
Lambert-St Louis
Mon 9/21
5:45 am-3:00 pm
2 stops9h 15m
Cancun
Fri 9/25
11:35 am-9:55 pm
1 stop10h 20m
$453
St. LouisCancún
STL Lambert-St Louis - CUN Cancun
STLCUN
Lambert-St Louis
Sat 12/5
2:31 pm-9:10 pm
1 stop5h 39m
Cancun
Wed 12/9
6:04 am-6:13 pm
2 stops13h 09m
$529
St. LouisCancún
STL Lambert-St Louis - CUN Cancun
STLCUN
Lambert-St Louis
Mon 10/19
7:00 am-2:25 pm
1 stop7h 25m
Cancun
Mon 10/26
11:21 am-11:54 pm
2 stops12h 33m
$529
St. LouisCancún
STL Lambert-St Louis - CUN Cancun
STLCUN
Lambert-St Louis
Thu 12/3
12:20 pm-9:10 pm
1 stop7h 50m
Cancun
Tue 12/8
1:30 pm-11:23 pm
2 stops10h 53m
$534
St. LouisCancún
STL Lambert-St Louis - CUN Cancun
STLCUN
Lambert-St Louis
Wed 12/2
12:20 pm-9:10 pm
1 stop7h 50m
Cancun
Wed 12/9
11:18 am-11:56 pm
2 stops13h 38m
$546
St. LouisCancún
STL Lambert-St Louis - CUN Cancun
STLCUN
Lambert-St Louis
Sun 10/18
6:00 am-1:15 pm
1 stop7h 15m
Cancun
Sun 10/25
12:26 pm-11:54 pm
2 stops11h 28m
$564
St. LouisCancún
STL Lambert-St Louis - CUN Cancun
STLCUN
Lambert-St Louis
Fri 2/5
8:55 am-5:25 pm
2 stops7h 30m
Cancun
Sat 2/13
10:55 am-1:05 pm
Nonstop3h 10m
$571
St. LouisCancún
STL Lambert-St Louis - CUN Cancun
STLCUN
Lambert-St Louis
Sat 1/30
7:20 am-8:00 pm
2 stops11h 40m
Cancun
Sat 2/6
4:30 pm-11:39 pm
1 stop8h 09m
$574
St. LouisCancún
STL Lambert-St Louis - CUN Cancun
STLCUN
Lambert-St Louis
Wed 8/26
6:20 am-12:56 pm
1 stop6h 36m
Cancun
Wed 9/2
12:30 pm-11:21 pm
1 stop10h 51m
$627
Quickest round-trip
St. LouisCancún
STL Lambert-St Louis - CUN Cancun
STLCUN
Lambert-St Louis
Mon 9/7
6:05 am-12:00 pm
1 stop5h 55m
Cancun
Mon 9/14
1:10 pm-4:15 pm
Nonstop3h 05m
$628
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Cancún
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Cancún in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Cancún flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Cancún flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Cancún flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Cancún flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Cancún flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Cancún
Have a flexible travel schedule? Discover the best time to fly to Cancún from St. Louis with our price prediction graph.
STL-CUN
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 Cancún
Prices
Airlines
How far ahead should I book a flight from St. Louis to Cancún?
The price you pay for your flight from St. Louis to Cancún may vary depending on when you book. For the best chance of a lower fare, look to book 26 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 Cancún?
Currently, September is the cheapest month in which you can book a flight from St. Louis to Cancún (average of $330). Flying from St. Louis to Cancún in June is currently the most expensive (average of $589). 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 CUN?
Find hourly flight availability from St. Louis to Cancún. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 12, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Cancún as you normally would.
The best insider tips for St. Louis to Cancún flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Cancún trip
Our travel experts
Reviews of airlines servicing Cancún
Get insights into the airlines that provide service to Cancún. 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 Cancún. Reviews last updated August 12, 2026.
Get a feel of what it's like to fly with Southwest,United Airlines, andAmerican Airlines from St. Louis to Cancún by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Cancún. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Book flights to Cancún if you plan to visit one of these locationsPuerto Aventuras
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St. Louis and Cancún flights
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Other flights from St. Louis
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Top 9 airlines flying from St. Louis to Cancún
Discover the top 9 airlines that operate flights from St. Louis to Cancún. 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 August 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$168 | Average$462 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$187 | Average$380 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$195 | Average$550 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$221 | Average$433 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$236 | Average$481 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$330 | Average$558 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$404 | Average$545 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$423 | Average$656 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$456 | Average$648 | FlexibilityNo cancel fee | On-time63% |