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St. Louis

$211+ 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — STL
Sep 15 — Sep 221
Tue 9/15
Tue 9/22
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

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 August 16, 2026.

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.
Thu 9/171:51 pm -
1 stop23h 19m
Thu 9/2410:20 am -
2 stops24h 59m
Deal found 8/12$386
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:05 pm -
1 stop16h 55m
Thu 9/248:55 am -
1 stop11h 15m
Deal found 8/11$392
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Fri 9/181:12 pm -
2 stops20h 27m
Mon 9/216:53 pm -
2 stops15h 13m
Deal found 8/16$431
This Mytrip deal was found by Cheapflights users on 8/13. 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 9/289:05 pm -
1 stop16h 55m
Mon 10/512:10 pm -
1 stop24h 05m
Deal found 8/13$465
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Thu 9/1712:11 pm -
1 stop10h 48m
Thu 9/248:00 am -
2 stops11h 19m
Deal found 8/14$477
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Fri 9/115:22 pm -
2 stops23h 12m
Fri 9/185:30 pm -
2 stops18h 32m
Deal found 8/14$478
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:33 am -
2 stops10h 24m
Thu 9/245:45 pm -
1 stop17h 43m
Deal found 8/11$490

Find 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 August 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$386
(Kiwi.com)

One-way from

$211
(Kiwi.com)

Good round-trip deal

$588 or less

Good one-way deal

$294 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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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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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 August 16, 2026.
Use the filters below to find and compare flights from Cancún to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Thu 9/17

1:51 pm-1:10 pm

1 stop23h 19m

Lambert-St Louis

Thu 9/24

10:20 am-11:19 am

2 stops24h 59m

$386

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Thu 9/17

9:05 pm-2:00 pm

1 stop16h 55m

Lambert-St Louis

Thu 9/24

8:55 am-8:10 pm

1 stop11h 15m

$392

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Fri 9/18

1:12 pm-9:39 am

2 stops20h 27m

Lambert-St Louis

Mon 9/21

6:53 pm-10:06 am

2 stops15h 13m

$431

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Fri 9/11

5:22 pm-2:15 pm

2 stops20h 53m

Lambert-St Louis

Fri 9/18

9:00 am-12:58 pm

1 stop27h 58m

$478

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Thu 9/17

12:11 pm-9:36 pm

1 stop9h 25m

Lambert-St Louis

Thu 9/24

8:00 am-7:19 pm

2 stops11h 19m

$478

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Thu 9/17

11:33 am-9:57 pm

2 stops10h 24m

Lambert-St Louis

Thu 9/24

5:45 pm-11:28 am

1 stop17h 43m

$490

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Wed 9/9

7:01 am-7:58 pm

2 stops12h 57m

Lambert-St Louis

Mon 9/14

6:00 am-2:10 pm

1 stop8h 10m

$518
Quickest round-trip

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Mon 9/14

12:50 pm-9:45 pm

1 stop8h 55m

Lambert-St Louis

Tue 9/15

6:00 am-1:10 pm

1 stop7h 10m

$525
Cheapest one-way
Quickest one-way

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Wed 11/25

4:00 pm-6:10 pm

Nonstop3h 10m

$229

CancúnSt. Louis

CUN Cancun - STL Lambert-St Louis

CUNSTL

Cancun

Wed 2/10

8:15 am-11:39 pm

1 stop16h 24m

$261

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 18 resultsSorted by cheapest first
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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cancún-St. Louis flight deals on Cheapflights vs. FlightHub >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 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 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 August 16, 2026.

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.

The best insider tips for Cancún to St. Louis 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 Cancún to St. Louis trip
Our travel experts
Taryn White

Taryn White

Expert on STL

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

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

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 August 16, 2026.
See what other customers who have flown with Frontier from Cancún to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Frontier
5.6
Fair
2,681 reviews

Boarding

5.9

Crew

6.5

Comfort

5.4

Food

4.5

Overall

5.6

Entertainment

4.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2026

EWR - DFW

Flight was delayed a whole day - no compensation on food or drinks. Gate staff gave an older gentleman a hard time about his confusion and concern regarding the overnight delay.
Frontier
5.6
Fair
2,681 reviews
Frontier
5.6
Fair
2,681 reviews

Boarding

5.9

Crew

6.5

Comfort

5.4

Food

4.5

Overall

5.6

Entertainment

4.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2026

EWR - DFW

Flight was delayed a whole day - no compensation on food or drinks. Gate staff gave an older gentleman a hard time about his confusion and concern regarding the overnight delay.

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.

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

    To fly from Cancún to St. Louis, you need to book a flight from Cancun (CUN) to Lambert-St Louis (STL). Nonstop flights to Lambert-St Louis from Cancun take 3h 05m on average. When it comes time to book airfare, you have a few options: there is 1 outbound flight from Cancun to Lambert-St Louis offered by 1 airline.

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

    Flights from Cancun to Lambert-St Louis have been viewed 1 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 16h 55m. Fly via Air Canada or United Airlines to get the fastest option. 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 is the cheapest airline to fly from Cancún to St. Louis round-trip?

    Frontier, at $298, was found to be the cheapest airline from Cancún to St. Louis..

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

    To fly one-way, consider booking your trip with Volaris, which is currently one of the cheapest options available, starting at $173. Delta flights start at $174 while deals on Frontier start at $182 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: Frontier (79%), Volaris (79%), Southwest (74%).

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

    Looking at all options, your cheapest flight can be booked for $270. While the most popular route (Cancun - Lambert-St Louis) can be booked for $429 on average, our data indicates $486 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
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Cancún to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Cancún to Kansas City flights
Cozumel to St. Louis flights

Top airline flying from Cancún to St. Louis

Discover the top airline that operate flights from Cancún to St. Louis. 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 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$298Average$588FlexibilityNo cancel feeOn-time62%

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