$100 Cheap Flights from St. Louis to Cancun

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Lambert-St. Louis Intl. to Cancun Intl.

Amazing STL to CUN Flight Deals

The cheapest flights to Cancun Intl. found within the past 7 days were $218 round trip and $100 one way. Prices and availability subject to change. Additional terms may apply.

Flight Schedule for STL to CUN

CarrierFlightDepart STLArrive CUNTue
F98609:59 am02:24 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
AA279609:08 am01:15 pm
Check Fare
0 Stops

Best Cancun Intl. Flight and Hotel Packages

Cancun Intl. flight + hotel packages - economy flights

InterContinental Presidente Cancun Resort, an IHG Hotel
Xperience Tulum Hotel
Elements Tulum Boutique Hotel
Dreams Natura Resort & Spa - All Inclusive
Wyndham Grand Cancun All Inclusive Resort & Villas
Don't see what you're looking for?
See all available trips from Lambert-St. Louis Intl. to Cancun Intl.
View all trips

Frequently asked questions

Can I catch a flight from STL to Cancun Intl. Airport (CUN) right now?
For information on any current Cancun Intl. Airport (CUN) quarantine requirements and travel advice, go to the Covid-19 Travel Advisor. Check before you book your flight, so you don’t get caught up.
Are there direct flights from St. Louis Lambert International Airport to Cancun Airport?
If you’re hoping to journey from St. Louis Lambert International Airport to CUN as speedily as possible, you’ll be glad to know multiple airlines offer nonstop flights. Choose your preferred seat with Frontier Airlines or Southwest Airlines.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to CUN, please visit our Customer Service Portal.
How long is the flight from Lambert Field to Cancun Intl. Airport (CUN)?
If you’re traveling from St. Louis to Cancun, you can expect the journey to take approximately 5 hours and 33 minutes. If this sounds like more time than you had hoped, why not make the most of it? Read about where you’re going, work on your itinerary and get as much shut-eye as possible before the adventure starts.
What is the flight distance from STL to Cancun Airport?
With a flight distance of 1,250 mi separating Lambert Field and Cancun Airport, you’ll be in your seat for a decent amount of time. It’s a great chance to watch a movie or two, catch up on work or just sit back with a book.
What airlines fly from Lambert-St. Louis Intl. Airport (STL) to CUN?
You can choose from several airlines that have direct flights between St. Louis and Cancun. Frontier Airlines (F9) is one of the most liked. This carrier operates roughly 17 flights each month. Another popular choice is Southwest Airlines (WN), which offers 8 flights each month. The more airlines you consider, the more likely you are to score a great deal.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Volaris, VivaAerobus or United Airlines you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.


Traveling From
Lambert-St. Louis Intl.
Traveling To
Cancun Intl.
Shortest Flight Time
hours mins
Earliest Departure Time
Latest Departure Time
Lowest Flight Price

Route Info

Flight path for flights from Lambert-St. Louis International Airport to Cancun International Airport

1,626.00 miles

Airlines & Aircraft Used on STL to CUN Flight Routes

Airline Carrier
American Airlines
Airbus A320-100/200
American Airlines
Airbus A321-100/200
American Airlines
Boeing 737-700 pax
American Airlines
Boeing 737-800 pax
American Airlines
Fokker 100
American Airlines
Fokker 70

Discover our best flights from St. Louis STL to Cancun CUN. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 


Find our best return flights from St. Louis STL to Cancun CUN at the right price  

Airfares to Cancun CUN from St. Louis STL currently cost between $218 and $302. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 


Book one-way flights from St. Louis STL to Cancun CUN 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from St. Louis STL to Cancun CUN on Travelocity starting at $100. Prices and availability subject to change. Additional terms may apply. 


Get to Cancun CUN from St. Louis STL quicker with direct flights. 

Get to Cancun faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to CUN from STL to take around hour(s) min(s).  


Find our cheapest airfares for flights from St. Louis STL to Cancun CUN

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to CUN from STL. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  


Get our best airfare deals for your flight from St. Louis STL to Cancun CUN today 

If you’re flexible about when you travel, February is usually the cheapest month to fly from St. Louis STL to Cancun CUN. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 


Book flexible airline tickets for flights to Cancun CUN from St. Louis STL 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to CUN from STL have this option.  


Travel with confidence when you book flights to Cancun CUN from St. Louis STL with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.