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$142+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CUN
mar. 30 — abr. 61
dom. 3/30
dom. 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Cancun are usually found in April or January, booked 87 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

Cheap 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 marzo 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$291
(CheapOair)

One-way from

$142
(Cheapflightsfares)

Popular in

March

Cheapest in

April

Average price

$665

Good round-trip deal

$377 or less

Good one-way deal

$184 or less
Provider with most accurate pricing for Lambert-St Louis-Cancun flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Cancun flights.
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From Lambert-St Louis to Cancun
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One-way flight from Lambert-St Louis to Cancun
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Highest demand for flights based on searches. 2% potential increase in price ($13 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Cancun.
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Price to beat on a one-way flight from Lambert-St Louis to Cancun.
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Find flight deals from St. Louis to Cancún

Cheapest flights from St. Louis to Cancún
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 marzo 25, 2025.

This CheapOair deal was found by Cheapflights users on 3/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/16:47 pmSTL - CUN
1 stop16h 33mMultiple Airlines
mar. 4/811:46 amCUN - STL
Nonstop3h 26mMultiple Airlines
Deal found 3/24$282
This CheapOair deal was found by Cheapflights users on 3/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/1010:10 amSTL - CUN
1 stop25h 03mSpirit Airlines
mié. 5/1412:18 pmCUN - STL
1 stop20h 57mSpirit Airlines
Deal found 3/24$291
This Cheapflightsfares deal was found by Cheapflights users on 3/23. 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.
sáb. 4/56:00 amSTL - CUN
Nonstop3h 28mVolaris
sáb. 4/1211:46 amCUN - STL
Nonstop3h 26mVolaris
Deal found 3/23$349
This Aeromexico deal was found by Cheapflights users on 3/24. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/66:00 amSTL - CUN
2 stops14h 29mAeromexico
mié. 5/148:31 amCUN - STL
2 stops15h 07mAeromexico
Deal found 3/24$359
This Frontier deal was found by Cheapflights users on 3/24. 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.
dom. 5/46:10 amSTL - CUN
Nonstop3h 12mFrontier
jue. 5/1512:39 pmCUN - STL
Nonstop3h 23mFrontier
Deal found 3/24$384
This Delta deal was found by Cheapflights users on 3/23. 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.
sáb. 5/36:00 amSTL - CUN
2 stops12h 48mDelta
mar. 5/69:17 amCUN - STL
2 stops14h 32mDelta
Deal found 3/23$399
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/216:15 amSTL - CUN
1 stop13h 05mUnited Airlines
vie. 4/253:30 pmCUN - STL
2 stops18h 28mUnited Airlines
Deal found 3/24$453
This American Airlines deal was found by Cheapflights users on 3/23. 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.
lun. 5/266:20 pmSTL - CUN
1 stop15h 10mAmerican Airlines
vie. 5/3010:55 amCUN - STL
1 stop10h 03mAmerican Airlines
Deal found 3/23$515
This Air Canada deal was found by Cheapflights users on 3/23. 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.
lun. 3/243:50 pmSTL - CUN
1 stop17h 45mAir Canada
jue. 3/279:30 pmCUN - STL
1 stop17h 36mAir Canada
Deal found 3/23$521

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 marzo 25, 2025.
Use the filters below to find and compare flights from St. Louis to Cancún that are best for you.

Fly from

St. Louis

Fly to

Cancún

Route

Depart

Return

Price

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

mar. 4/1

6:47 pm-11:20 am

1 stop16h 33m

Cancun

mar. 4/8

11:46 am-3:12 pm

Nonstop3h 26m

$282

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

sáb. 5/10

10:10 am-11:13 am

1 stop25h 03m

Cancun

mié. 5/14

12:18 pm-9:15 am

1 stop20h 57m

$291

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

sáb. 4/5

6:00 am-9:28 am

Nonstop3h 28m

Cancun

sáb. 4/12

11:46 am-3:12 pm

Nonstop3h 26m

$349

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

mar. 5/6

12:51 pm-1:23 am

2 stops12h 32m

Cancun

vie. 5/16

1:45 pm-8:39 pm

1 stop6h 54m

$359

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

dom. 5/4

6:10 am-9:22 am

Nonstop3h 12m

Cancun

lun. 5/12

12:39 pm-4:02 pm

Nonstop3h 23m

$384

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

sáb. 5/3

6:00 am-6:48 pm

2 stops12h 48m

Cancun

mar. 5/6

9:17 am-11:49 pm

2 stops14h 32m

$399

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

mar. 4/1

6:15 am-12:33 pm

1 stop6h 18m

Cancun

mar. 4/8

3:30 pm-10:09 pm

1 stop6h 39m

$449

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

lun. 5/26

6:20 pm-9:30 am

1 stop15h 10m

Cancun

vie. 5/30

7:50 am-7:29 pm

1 stop11h 39m

$515

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

dom. 4/20

6:10 pm-11:10 am

1 stop17h 00m

$142

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

mar. 4/22

6:00 am-2:09 pm

1 stop8h 09m

$164

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 15 results
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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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapOairPrice Accuracy1 starTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Cancún. Price data was last updated on March 21, 2025.

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 87 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, January is the cheapest month in which you can book a flight from St. Louis to Cancún (average of $360). Flying from St. Louis to Cancún 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 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 marzo 25, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 57% on flights from St. Louis to Cancún by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Cancún. Price data was last updated on March 16, 2025.

Travelers seeking maximum savings on their St. Louis to Cancún 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 Cancún

Explore weekly flight availability from St. Louis to Cancún. 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 marzo 25, 2025.

The most flights from STL to CUN are scheduled on a Saturday (4 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Cancún by month

Plan your trip to Cancún by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Cancún ranges from 1.1 - 11.1 inches per month. October is typically the wettest month, when rainfall can reach 11.1 in. April is typically the driest time to visit Cancún when rainfall is around 1.1 in.

Temperature in Cancún by month

Plan your trip to Cancún by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Cancún, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 75.2 F).

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 marzo 25, 2025.
Get a feel of what it's like to fly with Southwest, Delta and Aeromexico 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.
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,890 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Aeromexico
7.5
Good
1,700 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

  • What airports do I use to fly from St. Louis to Cancún?

    Booking a flight from Lambert-St Louis (STL) to Cancun (CUN) is your only option if you wish to fly from St. Louis to Cancún. On a typical day, there are 2 flights from Lambert-St Louis to Cancun, all of which are around 3h 05m for a nonstop flight. You can also purchase a plane ticket from 7 airlines when you book a flight from Lambert-St Louis to Cancún.

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

    Within the past month, 15 users have taken a look at flights from Lambert-St Louis to Cancun.

  • What are the cheapest airlines flying from St. Louis to Cancún round-trip?

    Our cheapest airline available from St. Louis to Cancún is Spirit Airlines. Our recent data shows that you can find tickets from as low as $291 on this airline. Additional options worth looking into are Volaris and Aeromexico, starting at $349 and $359 round-trip. Spirit Airlines is 44% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Cancún one-way?

    One-way options have recently been found by users for as low as $142 on Spirit Airlines. Other airlines that offer cheap prices include Delta from $164 and Frontier from $180 one-way.

  • What are the most reliable airlines from St. Louis to Cancún?

    No one likes to see their flight delayed. When booking a flight from St. Louis to Cancún consider choosing American Airlines (89%), Frontier (82%) or Southwest (81%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $174. While the most popular route (Lambert-St Louis - Cancun) can be booked for $291 on average our data indicates $418 when flying from St. Louis to Cancún.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Cancún 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 Cancún?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Cancún (average of $360). Flying from St. Louis to Cancún 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Puerto Aventuras
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Top 7 airlines flying from St. Louis to Cancún

Discover the top 7 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 marzo 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$176Average$383FlexibilityNo cancel feeOn-time79%
FrontierCheapest$280Average$495FlexibilityNo cancel feeOn-time62%
AeromexicoCheapest$342Average$495FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$408Average$555FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$426Average$590FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$457Average$603FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$517Average$688FlexibilityNo cancel feeOn-time63%
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