Which layover airport has the shortest travel time from St. Louis to Cancún?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 6h 11m.

How many flights depart from St. Louis to Cancún on average per week?

22 flights are operational weekly from St. Louis to Cancún as of March 2026. The most popular departure day for this route is Sat, with 23% of flights per week taking off on this day.

What airlines fly to Cancún?

Frontier, American Airlines and Southwest are the top three most popular airlines that fly to Cancún from St. Louis according to our data. Frontier is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Cancún. Keep in mind that there are 8 different airlines that fly to Cancún on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from St. Louis to Cancún?

Flights via Denver (DEN) offer the lowest average round-trip price of $118.

How many flights depart from St. Louis to Cancún on average per day?

As of March 2026, there are 3 flights per day flying from St. Louis to Cancún. The most common time of day flights depart is 6:00AM, with 95% of flights taking off at noon.

Which airport is the most popular layover for flights between St. Louis and Cancún?

Atlanta (ATL) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Lambert-St Louis to Cancun?

Delta is the most popular carrier operating from Lambert-St Louis to Cancun

Which layover airport has the shortest connection time from St. Louis to Cancún?

Houston (IAH) has the shortest average layover time for this route: 1h 38m.

When did momondo last update prices for flights from Lambert-St Louis Airport to Cancun Airport?

Prices for flights from Lambert-St Louis Airport to Cancun Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Cancun Airport?

As of March 2026, there are 8 operators available to choose from for flights from Lambert-St Louis Airport to Cancun Airport.

How old do you have to be to fly from Lambert-St Louis Airport to Cancun Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Cancun Airport.

What documentation or ID do you need to fly to Cancun Airport?

The travel and health documents required for your trip to Cancun Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Cancun Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$129 Cheap Flights from St. Louis to Cancún in 2026

Q: What is the typical price of a round-trip flight between St. Louis and Cancún?

Prices are currently low for flights on this route. Typical prices usually range from $412 to $668. The lowest price recently found on this route was $316.

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Find the cheapest flights from St. Louis to Cancún

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 9:17 am

STL

CUN

3h 17mnonstop

11:48 am - 3:19 pm

CUN

STL

3h 31mnonstop

$316Frontier

Wed, Apr 15 - Wed, Apr 22

6:15 am - 9:32 am

STL

CUN

3h 17mnonstop

11:48 am - 3:19 pm

CUN

STL

3h 31mnonstop

$321Frontier

Mon, Apr 13 - Thu, Apr 16

11:25 am - 2:56 pm

STL

CUN

27h 31m

1 stop

4:07 pm - 6:50 am

CUN

STL

14h 43m

1 stop

$323Frontier

Thu, Apr 23 - Tue, Apr 28

6:00 am - 9:17 am

STL

CUN

3h 17mnonstop

11:48 am - 3:19 pm

CUN

STL

3h 31mnonstop

$324Frontier

Wed, Apr 15 - Wed, Apr 22

8:16 pm - 11:24 am

STL

CUN

15h 08m

1 stop

9:12 am - 11:25 pm

CUN

STL

14h 13m

1 stop

$325Frontier

Sat, Apr 4 - Sat, Apr 11

6:41 pm - 2:07 pm

STL

CUN

19h 26m

1 stop

3:22 pm - 5:33 pm

CUN

STL

26h 11m

1 stop

$329Frontier

Tue, May 5 - Mon, May 11

8:16 pm - 11:24 am

STL

CUN

15h 08m

1 stop

3:54 pm - 7:21 pm

CUN

STL

27h 27m

1 stop

$331Frontier

Wed, Apr 8 - Wed, Apr 15

8:16 pm - 11:24 am

STL

CUN

15h 08m

1 stop

9:12 am - 11:25 pm

CUN

STL

14h 13m

1 stop

$335Frontier

Sat, Apr 11 - Mon, Apr 13

11:21 am - 12:21 pm

STL

CUN

25h 00m

1 stop

10:07 am - 5:34 pm

CUN

STL

7h 27m

1 stop

$342Frontier

Tue, Apr 7 - Thu, Apr 9

4:05 pm - 4:40 pm

STL

CUN

24h 35m

1 stop

4:07 pm - 6:50 am

CUN

STL

14h 43m

1 stop

$343Multiple Airlines

Tue, Apr 14 - Sun, Apr 19

Frontier flights from St. Louis to Cancún

Our best Frontier deals on St. Louis to Cancún flight tickets

Frontier

Apr 15

STL6:00 amLambert-St Louis

3h 17m

CUN9:17 amCancun

Apr 22

CUN11:48 amCancun

3h 31m

STL3:19 pmLambert-St Louis

$316

Frontier

Apr 13

STL6:15 amLambert-St Louis

3h 17m

CUN9:32 amCancun

Apr 16

CUN11:48 amCancun

3h 31m

STL3:19 pmLambert-St Louis

$321

Frontier

Mar 27

STL7:47 amLambert-St Louis

6h 46m

1 stop

CUN2:33 pmCancun

Apr 3

CUN9:12 amCancun

14h 43m

1 stop

STL11:55 pmLambert-St Louis

$322

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Wed 4/15

6:00 am-9:17 am

Nonstop3h 17m

Cancun

Wed 4/22

11:48 am-3:19 pm

Nonstop3h 31m

$316

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Mon 4/13

6:15 am-9:32 am

Nonstop3h 17m

Cancun

Thu 4/16

11:48 am-3:19 pm

Nonstop3h 31m

$321

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Thu 4/23

11:25 am-2:56 pm

1 stop27h 31m

Cancun

Tue 4/28

4:07 pm-6:50 am

1 stop14h 43m

$323

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Wed 4/15

6:00 am-9:17 am

Nonstop3h 17m

Cancun

Wed 4/22

11:48 am-3:19 pm

Nonstop3h 31m

$324

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sat 4/4

8:16 pm-11:24 am

1 stop15h 08m

Cancun

Sat 4/11

9:12 am-11:25 pm

1 stop14h 13m

$325

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 5/5

6:41 pm-2:07 pm

1 stop19h 26m

Cancun

Mon 5/11

3:22 pm-5:33 pm

1 stop26h 11m

$329

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Wed 4/8

8:16 pm-11:24 am

1 stop15h 08m

Cancun

Wed 4/15

3:54 pm-7:21 pm

1 stop27h 27m

$331

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Sat 4/11

8:16 pm-11:24 am

1 stop15h 08m

Cancun

Mon 4/13

9:12 am-11:25 pm

1 stop14h 13m

$335

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 4/7

11:21 am-12:21 pm

1 stop25h 00m

Cancun

Thu 4/9

10:07 am-5:34 pm

1 stop7h 27m

$342

St. LouisCancún

STL - CUN

STLCUN

Lambert-St Louis

Tue 4/14

4:05 pm-4:40 pm

1 stop24h 35m

Cancun

Sun 4/19

4:07 pm-6:50 am

1 stop14h 43m

$343

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Cancún

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the typical price of a round-trip flight between St. Louis and Cancún?

What is the cheapest month to fly to Cancún?

If you don’t want to visit Cancún in September, then you should wait until October to fly from St. Louis, when ticket prices are also cheap, with an average price of $397.

What is the cheapest day to depart on your flight to Cancún?

The cheapest day to depart from St. Louis to Cancún is on a Monday when prices can be found for as low as $392. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $488. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cancún.

What is the cheapest time of day to depart on your flight to Cancún?

Our most recent data shows that the best time of day to fly to Cancún is in the morning. Flights from St. Louis to Cancún during this time can be as low as $434. Flights to Cancún are more costly at noon, with an average ticket price of $590. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Lambert-St Louis to Cancun flight route?

Fly from Lambert-St Louis to Cancun for the best Lambert-St Louis - Cancun flight prices

How far in advance should I book a flight to Cancún?

You are more likely to see cheaper flights to Cancún from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Cancún for around $459 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cancún from St. Louis for as low as $367 on momondo.

What cabin class options are available on Lambert-St Louis to Cancun flights?

There is only 1 cabin class available to choose from on Lambert-St Louis to Cancun flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Cancún flights?

You could potentially save up to 1% on your flight if you consider stops on a St. Louis to Cancún flight.

How have St. Louis to Cancún flight prices changed over time?

As of March 2026, prices for St. Louis to Cancún flights are approximately 0% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Cancún

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Cancún according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Cancún (STL to CUN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Cancún

Best Price Found	$213
Fastest flight time	3h 05m
Direct flights	Every day
Airports in Cancún	1 airport

The best one-way flight to Cancún from St. Louis in the past 72 hours is $213. The best round-trip flight deal from St. Louis to Cancún found on momondo in the last 72 hours is $430.

The fastest flight from St. Louis to Cancún takes 3h 05m

Direct flights go from St. Louis to Cancún every day.

There is 1 airport in Cancún. From St. Louis there are direct flights to Cancun (CUN).

Search flight deals

How far is Lambert-St Louis to Cancun by plane?
Cancun is 1222.8 mi away from Lambert-St Louis. Typically, this will take 3h 05m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Cancun Airport?
Prices for flights from Lambert-St Louis Airport to Cancun Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Cancun Airport?
As of March 2026, there are 8 operators available to choose from for flights from Lambert-St Louis Airport to Cancun Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Cancun Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Cancun Airport.
What documentation or ID do you need to fly to Cancun Airport?
The travel and health documents required for your trip to Cancun Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Cancun Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from St. Louis to Cancún?
Based on momondo bookings for flights between St. Louis and Cancún, the leading plane model is Airbus A321-100/200, making up 38.78% of the total bookings. Other popular models include Boeing 737 MAX 8 with 28.44%, Airbus A321neo with 13.47%, and Boeing 737-800 with 9.93%.
What is the most popular airline from St. Louis to Cancún?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Cancún is Frontier, representing 54% of all bookings. The subsequent popular airlines are Southwest at 15%, American Airlines at 11%, and Volaris at 8%.

Best airlines flying from St. Louis to Cancún

Compare and see reviews for airlines that fly from St. Louis to Cancún with momondo

Airline	Rating	Free Cancellation	Price
Aeromexico	PriceFrom $168	Free Cancellation	Rating 7.4 1,563 reviews	Search Aeromexico flights
Volaris	PriceFrom $180	Free Cancellation	Rating 6.6 1,171 reviews	Search Volaris flights
Delta	PriceFrom $196	Free Cancellation	Rating 7.9 8,315 reviews	Search Delta flights
Frontier	PriceFrom $213	Free Cancellation	Rating 5.7 3,020 reviews	Search Frontier flights
United Airlines	PriceFrom $314	Free Cancellation	Rating 7.4 9,453 reviews	Search United Airlines flights
JetBlue	PriceFrom $404	Free Cancellation	Rating 7.2 2,909 reviews	Search JetBlue flights
American Airlines	PriceFrom $412	Free Cancellation	Rating 7.1 11,490 reviews	Search American Airlines flights
Southwest	PriceFrom $477	Free Cancellation	Rating 8.0 4,324 reviews	Search Southwest flights

Southwest Flights From St. Louis to Cancún
Across 7 Southwest flights from St. Louis to Cancún this week, the average price was $627, with the best Southwest deals starting from $477 round-trip. 4,325 users have rated Southwest on momondo, with an average score of 8.0/10.
American Airlines Flights From St. Louis to Cancún
The best American Airlines deal for St. Louis to Cancún flight tickets found on momondo in the last 72 hours was $412, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $623 round-trip. American Airlines operates 1 flight out of St. Louis into Cancún in an average week, so prices vary by time and availability. 11,487 American Airlines reviews by users on momondo have scored the airline at 7.1/10.

Playa del Carmen

Isla Mujeres

Holbox

Puerto Morelos

Akumal

Puerto Aventuras

Punta Sam

Valladolid

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Cancún?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Cancún from St. Louis.

Can I find flights from St. Louis to Cancún with flexible booking policies on momondo?

All flight searches from St. Louis to Cancún on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from St. Louis to Cancún?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Cancún from St. Louis.

I’m not ready to book a flight from St. Louis to Cancún right now. Can momondo alert me if prices change?

Price alerts on flights to Cancún from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from St. Louis to Cancún from $129

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Cancún departing on 4/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from St. Louis to Cancún

What is the typical price of a round-trip flight between St. Louis and Cancún?

What is the cheapest month to fly to Cancún?

What is the cheapest day to depart on your flight to Cancún?

What is the cheapest time of day to depart on your flight to Cancún?

What is the cheapest Lambert-St Louis to Cancun flight route?

How far in advance should I book a flight to Cancún?

What cabin class options are available on Lambert-St Louis to Cancun flights?

Can stopping save me money on St. Louis to Cancún flights?

How have St. Louis to Cancún flight prices changed over time?

What is the cheapest airline that flies from Lambert-St Louis to Cancun?

What airlines fly to Cancún?

Which airport is the most popular layover for flights between St. Louis and Cancún?

Which layover airport offers the lowest fares from St. Louis to Cancún?

Which layover airport has the shortest travel time from St. Louis to Cancún?

Which layover airport has the shortest connection time from St. Louis to Cancún?

How many flights depart from St. Louis to Cancún on average per day?

How many flights depart from St. Louis to Cancún on average per week?

When to book flights from St. Louis to Cancún

Cheap St. Louis to Cancún (STL to CUN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Cancún

Best Price Found

Fastest flight time

Direct flights

Airports in Cancún

Best airlines flying from St. Louis to Cancún

Compare and see reviews for airlines that fly from St. Louis to Cancún with momondo

Southwest Flights From St. Louis to Cancún

American Airlines Flights From St. Louis to Cancún

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