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$136+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — STL
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$344
(Mytrip)

One-way from

$136
(Expedia)

Popular in

April

Cheapest in

May

Good round-trip deal

$174 or less

Good one-way deal

$176 or less
Provider with most accurate pricing for Cancun-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Cancun-Lambert-St Louis flights.
Search Deals
From Cancun to Lambert-St Louis
Search Deals
One-way flight from Cancun to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
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 February 20, 2025.

This Mytrip deal was found by Cheapflights users on 2/18. 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.
Wed 5/143:15 pmCUN - STL
1 stop23h 52mFrontier
Wed 5/216:10 amSTL - CUN
Nonstop3h 12mFrontier
Deal found 2/18$344
This Cheapflightsfares deal was found by Cheapflights users on 2/18. 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.
Wed 5/1412:39 pmCUN - STL
Nonstop3h 23mVolaris
Wed 5/216:10 amSTL - CUN
Nonstop3h 12mVolaris
Deal found 2/18$370
This OneTravel deal was found by Cheapflights users on 2/19. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/811:46 amCUN - STL
Nonstop3h 26mMultiple Airlines
Tue 4/156:11 pmSTL - CUN
2 stops38h 04mMultiple Airlines
Deal found 2/19$402
This United Airlines deal was found by Cheapflights users on 2/19. 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 4/87:51 amCUN - STL
1 stop14h 18mUnited Airlines
Tue 4/156:30 amSTL - CUN
2 stops12h 50mUnited Airlines
Deal found 2/19$407
This Delta deal was found by Cheapflights users on 2/18. 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 5/1412:17 pmCUN - STL
2 stops11h 21mDelta
Wed 5/2110:10 amSTL - CUN
1 stop9h 42mDelta
Deal found 2/18$595

Find flights from Cancún to St. Louis within your budget

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 February 20, 2025.

Fly from

Cancún

Fly to

St. Louis

Route

Depart

Return

Price

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 5/14

3:15 pm-3:07 pm

1 stop23h 52m

Lambert-St Louis

Wed 5/21

6:10 am-9:22 am

Nonstop3h 12m

$344

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 5/14

12:39 pm-4:02 pm

Nonstop3h 23m

Lambert-St Louis

Wed 5/21

6:10 am-9:22 am

Nonstop3h 12m

$370

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 4/8

11:46 am-3:12 pm

Nonstop3h 26m

Lambert-St Louis

Tue 4/15

6:11 pm-8:15 am

2 stops38h 04m

$402

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 4/8

7:51 am-10:09 pm

1 stop14h 18m

Lambert-St Louis

Tue 4/15

6:30 am-7:20 pm

2 stops12h 50m

$407

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 5/14

12:17 pm-11:38 pm

2 stops11h 21m

Lambert-St Louis

Wed 5/21

10:10 am-7:52 pm

1 stop9h 42m

$595

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Fri 5/2

3:15 pm-9:09 am

1 stop17h 54m

$136

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 3/26

9:08 am-11:49 pm

1 stop14h 41m

$161

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 4/2

12:25 pm-5:52 pm

1 stop29h 27m

$167

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sun 4/20

11:46 am-3:12 pm

Nonstop3h 26m

$170

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 3/26

4:40 pm-11:31 pm

1 stop6h 51m

$240

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 15 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 February.
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
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 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.

Travel insights for flights from Cancún to St. Louis

Get recent, data-driven insights about flights from Cancún to St. Louis including ideal travel times, pricing trends, and more.

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 February 20, 2025.

It’s optimal to fly from Cancún to St. Louis in the morning. By choosing this option you can save up to 31% on the cost of your flight, compared to a flight in the afternoon.

Weekly flight availability from Cancún to St. Louis

Explore weekly flight availability from Cancún to St. Louis. 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 February 20, 2025.

The most flights from CUN to STL are scheduled on a Monday (2 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 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 February 20, 2025.
Southwest
8.1
Very good
4,413 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,413 reviews
Southwest
8.1
Very good
4,413 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,227 reviews
Southwest
8.1
Very good
4,413 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,768 reviews
Southwest
8.1
Very good
4,413 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,413 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Air Canada
7.0
Good
8,748 reviews
Southwest
8.1
Very good
4,413 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 3 times in the past calendar month.

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

    Frontier, at $344, was found to be the cheapest airline from Cancún to St. Louis.Alternate airlines to your destination round-trip include Volaris and United Airlines. Frontier is priced at 38% 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 Frontier, which is currently one of the cheapest options available, starting at $136. Spirit Airlines flights start at $167 while deals on Volaris start at $170 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 (76%), Frontier (75%), American Airlines (67%).

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

    Looking at all options, your cheapest flight can be booked for $125. While the most popular route (Cancun - Lambert-St Louis) can be booked for $339 on average our data indicates $203 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
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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