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$105+ 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 12/19. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — STL
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$243
(Kiwi.com)

One-way from

$105
(Super.com)

Popular in

January

Cheapest in

September

Average price

$387

Good round-trip deal

$187 or less

Good one-way deal

$192 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. 27% potential increase in price ($158 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 13, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Sat 12/2712:26 pmCUN - STL
Nonstop3h 21mFrontier
Sat 1/37:43 pmSTL - CUN
1 stop20h 29mFrontier
Deal found 11/12$243
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1611:28 amCUN - STL
Nonstop3h 22mFrontier
Fri 1/306:00 amSTL - CUN
Nonstop3h 30mFrontier
Deal found 11/12$288
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Tue 12/1611:28 amCUN - STL
Nonstop3h 22mMultiple Airlines
Fri 1/3011:18 amSTL - CUN
1 stop20h 55mMultiple Airlines
Deal found 11/12$311
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 12/1912:26 pmCUN - STL
Nonstop3h 21mMultiple Airlines
Mon 12/294:27 pmSTL - CUN
2 stops20h 04mMultiple Airlines
Deal found 11/12$330
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:30 amCUN - STL
2 stops10h 58mUnited Airlines
Fri 1/306:30 amSTL - CUN
2 stops10h 20mUnited Airlines
Deal found 11/12$391
This Trip.com deal was found by Cheapflights users on 11/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:26 pmCUN - STL
Nonstop3h 21mMultiple Airlines
Fri 1/26:00 amSTL - CUN
Nonstop3h 23mMultiple Airlines
Deal found 11/10$412

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 November 13, 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

Sat 12/27

12:26 pm-2:47 pm

Nonstop3h 21m

Lambert-St Louis

Sat 1/3

7:43 pm-5:12 pm

1 stop20h 29m

$243

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 12/16

11:28 am-1:50 pm

Nonstop3h 22m

Lambert-St Louis

Fri 1/30

6:00 am-10:30 am

Nonstop3h 30m

$288

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/5

10:13 am-11:33 pm

1 stop14h 20m

Lambert-St Louis

Sun 2/8

4:45 pm-9:13 am

1 stop15h 28m

$297

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 12/16

11:28 am-1:50 pm

Nonstop3h 22m

Lambert-St Louis

Fri 1/30

11:18 am-9:13 am

1 stop20h 55m

$311

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/5

12:29 pm-2:56 pm

Nonstop3h 27m

Lambert-St Louis

Mon 2/9

6:00 am-10:30 am

Nonstop3h 30m

$315

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

1:01 pm-3:26 pm

Nonstop3h 25m

Lambert-St Louis

Sun 2/22

6:00 am-10:23 am

Nonstop3h 23m

$318

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Mon 2/2

10:13 am-11:33 pm

1 stop14h 20m

Lambert-St Louis

Sun 2/8

4:45 pm-9:13 am

1 stop15h 28m

$325

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Fri 12/19

12:26 pm-2:47 pm

Nonstop3h 21m

Lambert-St Louis

Mon 12/29

4:27 pm-1:31 pm

2 stops20h 04m

$330

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 2/3

12:29 pm-2:56 pm

Nonstop3h 27m

Lambert-St Louis

Mon 2/9

6:00 am-10:30 am

Nonstop3h 30m

$332

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sat 12/13

11:28 am-1:50 pm

Nonstop3h 22m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 20 results
1
2

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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Cancún-St. Louis flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 November 13, 2025.

When flying from Cancún to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

The best insider tips for Cancún to St. Louis flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Cancún to St. Louis trip
Airports
CUN

CUN's terminals are crowded, so arrive early to navigate security lines and packed areas efficiently.

Read more about CUNby Ramsey Qubein
STL

Use the MetroLink from STL for a convenient, economical ride to downtown St. Louis in about 40 minutes.

Read more about STLby Taryn White
Our travel experts
Taryn White

Taryn White

Expert on STL

Taryn White

Taryn White

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on CUN

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

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.

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

    There are many flights that can get you from Cancún to St. Louis in 3h 21m. Fly via Frontier to get the fastest option. Airlines will cover a distance of 1241 mi. Most flights are nonstop.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $157. Air Canada flights start at $179 while deals on Volaris start at $187 one-way.

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

    Looking at all options, your cheapest flight can be booked for $180. While the most popular route (Cancun - Lambert-St Louis) can be booked for $311 on average, our data indicates $253 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.

See more FAQs

Traveling to a place near St. Louis?

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

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