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St. Louis

$137+ Cheap flights from Cancún (CUN) to St. Louis (STL)

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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — STL
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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1. Tell us where you want to go

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Cheap flight deals from Cancún to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Cancún (CUN) to St. Louis (STL). 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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$454
(Expedia)

One-way from

$137
(Cheapflightsfares)

Popular in

September

Cheapest in

June

Average price

$372

Good round-trip deal

$208 or less

Good one-way deal

$208 or less
Provider with most accurate pricing for Cancun-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Cancun-Lambert-St Louis flights.
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From Cancun to Lambert-St Louis
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One-way flight from Cancun to Lambert-St Louis
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Highest demand for flights based on searches. 11% potential increase in price ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Price to beat on a round-trip flight from Cancun to Lambert-St Louis.
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Price to beat on a one-way flight from Cancun to Lambert-St Louis.
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Find flight deals from Cancún to St. Louis

Cheapest flights from Cancún to St. Louis
Explore the most affordable flight options available from Cancún to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Expedia deal was found by Cheapflights users on 4/30. 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 6/1610:00 amCUN - STL
1 stop8h 18mMultiple Airlines
Mon 6/237:29 pmSTL - CUN
1 stop20h 53mMultiple Airlines
Deal found 4/30$454
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1610:00 amCUN - STL
1 stop8h 18mSpirit Airlines
Mon 6/237:13 pmSTL - CUN
2 stops16h 13mSpirit Airlines
Deal found 4/30$461
This Delta deal was found by Cheapflights users on 4/30. 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.
Fri 12/264:15 pmCUN - STL
1 stop8h 24mDelta
Fri 1/27:15 amSTL - CUN
2 stops13h 15mDelta
Deal found 4/30$531
This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1612:37 pmCUN - STL
Nonstop3h 25mFrontier
Mon 6/236:45 amSTL - CUN
Nonstop3h 15mFrontier
Deal found 4/30$744
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/269:00 amCUN - STL
2 stops15h 56mAlaska Airlines
Fri 1/22:55 pmSTL - CUN
2 stops15h 40mAlaska Airlines
Deal found 4/30$1,339

Cheapflights Fare Finder

Customize your flight search to find flights from Cancún 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, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from Cancún to St. Louis that are best for you.

Fly from

Cancún

Fly to

St. Louis

Route

Depart

Return

Price

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Mon 6/16

10:00 am-6:18 pm

1 stop8h 18m

Lambert-St Louis

Mon 6/23

7:29 pm-4:22 pm

1 stop20h 53m

$454

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Mon 6/16

10:00 am-6:18 pm

1 stop8h 18m

Lambert-St Louis

Mon 6/23

7:13 pm-11:26 am

2 stops16h 13m

$461

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Mon 6/16

12:37 pm-4:02 pm

Nonstop3h 25m

Lambert-St Louis

Mon 6/23

6:45 am-10:00 am

Nonstop3h 15m

$744

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 6/12

10:00 am-5:04 pm

1 stop7h 04m

$137

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 6/24

9:13 am-11:53 pm

1 stop14h 40m

$188

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Mon 5/26

12:37 pm-4:00 pm

Nonstop3h 23m

$197

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 6/5

3:25 pm-9:12 am

1 stop17h 47m

$201

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 8/19

12:30 pm-11:01 pm

2 stops10h 31m

$238

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 6/25

1:12 pm-8:49 pm

1 stop7h 37m

$261

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sat 6/7

11:15 am-2:30 pm

Nonstop3h 15m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 13 results
1
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Compare providers for flights from Cancún to St. Louis

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 Cancún to St. Louis in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 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 Cancún-St. Louis flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Cancún-St. Louis flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Cancún-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Cancún-St. Louis flights, Cheapflights users trust AranGrant the most. AranGrant 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 Cancún-St. Louis 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 Cancún to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Cancún 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 Cancún to St. Louis

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

Find hourly flight availability from Cancún to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

It’s optimal to fly from Cancún to St. Louis in the morning. By choosing this option you can save up to 35% on the cost of your flight, compared to a flight in the afternoon.

Rainfall in St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated May 1, 2025.
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,294 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,934 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
LATAM Airlines
7.5
Good
1,767 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Aeromexico
7.5
Good
1,698 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Related info for your journey

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

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

    Flights from Cancun to Lambert-St Louis have been viewed 2 times in the past calendar month.

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

    Spirit Airlines, at $461, was found to be the cheapest airline from Cancún to St. Louis. An alternate airline flying to your destination would be Frontier. Spirit Airlines is priced at 7% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $137. Volaris flights start at $197 while deals on Frontier start at $201 one-way.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Cancún to St. Louis on time: Southwest (81%), American Airlines (71%), Frontier (41%).

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

    Looking at all options, your cheapest flight can be booked for $170. While the most popular route (Cancun - Lambert-St Louis) can be booked for $317 on average our data indicates $248 when flying from Cancún to St. Louis.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Cancún to St. Louis (average of $311). Flying from Cancún to St. Louis in March is currently the most expensive (average of $356). 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 Cancún?

Book flights to Cancún if you plan to visit one of these locations
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
O'Fallon

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