Cheap flights from St. Louis to Cancún from $118
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 9/4. 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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American Airlines flights from St. Louis to Cancún
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Aeromexico flights from St. Louis to Cancún
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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
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 April, then you should wait until January to fly from St. Louis, when ticket prices are also cheap, with an average price of $485.
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 Tuesday when prices can be found for as low as $479. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $540. 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 evening. Flights from St. Louis to Cancún during this time can be as low as $367. Flights to Cancún are more costly at noon, with an average ticket price of $851. 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 8 weeks ahead of your departure date. In general, you can expect to find flights to Cancún for around $527 when searching 8 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 $480 on momondo.
What cabin class options are available on Lambert-St Louis to Cancun flights?
There are 2 cabin classes 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 4% 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 June 2025, prices for St. Louis to Cancún flights are approximately 4% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Lambert-St Louis to Cancun?
Spirit Airlines, Frontier, and Delta are the most popular carriers operating from Lambert-St Louis to Cancun
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 48% 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.
How many flights depart from St. Louis to Cancún on average per day?
As of June 2025, there are 2 flights per day flying from St. Louis to Cancún. The most common time of day flights depart is 8:00AM, with 94% of flights taking off at noon.
How many flights depart from St. Louis to Cancún on average per week?
17 flights are operational weekly from St. Louis to Cancún as of June 2025. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.
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
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 13m 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 June 2025, 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 Boeing 737 MAX 8, making up 31.41% of the total bookings. Other popular models include Airbus A320neo with 26.86%, Airbus A321neo with 15.63%, and Boeing 737-700 Passenger/BBJ1 (winglets) with 9.56%.
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 44% of all bookings. The subsequent popular airlines are American Airlines at 17%, Southwest at 15%, and Volaris at 9%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $130 | Free Cancellation | Rating 6.3 8,052 reviews | |||
| PriceFrom $175 | Free Cancellation | Rating 6.7 1,170 reviews | |||
| PriceFrom $290 | Free Cancellation | Rating 5.9 3,295 reviews | |||
| PriceFrom $346 | Free Cancellation | Rating 7.5 1,706 reviews | |||
| PriceFrom $358 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $444 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $449 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $520 | Free Cancellation | Rating 8.0 4,287 reviews |
Southwest Flights From St. Louis to Cancún
Across 10 Southwest flights from St. Louis to Cancún this week, the average price was $674, with the best Southwest deals starting from $520 round-trip. 4,287 users have rated Southwest on momondo, with an average score of 8.0/10.
Frontier Flights From St. Louis to Cancún
The best Frontier deal for St. Louis to Cancún flight tickets found on momondo in the last 72 hours was $290, round-trip. It should be noted that an average Frontier flight deal for this route in this time was higher, at $487 round-trip. Frontier operates 7 flights out of St. Louis into Cancún in an average week, so prices vary by time and availability. 3,295 Frontier reviews by users on momondo have scored the airline at 5.9/10.
Traveling to a place near Cancún?
Book flights to Cancún if you plan to visit one of these locationsWhy 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.