Cheap Flights from Cancun (CUN) to St Louis (STL)

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Flight deals from Cancun to St Louis

Looking for a cheap last-minute deal or the best round-trip flight from Cancun to St Louis? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Cancun to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Cancun to St Louis flights are currently cheapest in June.

Direct flights from Cancun to St Louis

Cancun to St Louis: Alternative routes

Compare routes from Cancun to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Cancun to St Louis: Flight information

The things to know before you go.
Cheapest flight found$142
Cheapest month to flyJune
Average flight time3 hrs, 16 mins
Most popular airlineSouthwest Airlines
Average flights per week29

Finding cheap flights from Cancun to St Louis: Frequently asked questions

The best price we found for a round-trip flight from Cancun to St Louis is $262. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 16 minutes is the average flight time from Cancun to St Louis.
Southwest Airlines, Frontier Airlines and Volaris fly direct from Cancun to St Louis.
There are 31 flights per week flying from Cancun to St Louis, as of May 2025.
The cheapest month to fly from Cancun to St Louis is usually May 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Cancun Airport to St Louis Airport on Thursday, August 14, 2025.
Yes – the average flight time is 3 hours and 16 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines offers the cheapest flight tickets to St Louis.

Flying from Cancun International Airport (CUN) to Lambert-St. Louis International Airport (STL): what you need to know

  • The average duration of a direct flight from Cancun International Airport to Lambert-St. Louis International Airport is 3 hours 20 minutes.

  • Cancun and St Louis are in the same timezone, UTC-5.

  • Flights from CUN to STL start at 10:40 — the earliest with Southwest Airlines. The last departure is at 16:30 with Southwest Airlines. In total, you can take your pick of 13 weekly Cancun International Airport to Lambert-St. Louis International Airport flights.

  • To ensure you catch your CUN to STL flight, allow plenty of time to navigate the airport and find your gate. Turning up two hours before international departures and an hour before domestic flights is the general travel rule.

  • Be prepared for longer lines during popular months such as July. Arriving up to four hours in advance for international flights and two hours for domestic departures is a good idea.

  • You can fly nonstop to St Louis, United States. Book a ticket with one of these carriers offering direct flights from Cancun International Airport to Lambert-St. Louis International Airport:

  • The majority of passengers choose to travel with American Airlines on this route.

  • With 78.69% of its services landing as planned, Frontier Airlines is the most punctual carrier operating CUN to STL flights.

  • Consider adding a stopover when booking your ticket from Cancun International Airport to Lambert-St. Louis International Airport. Simply uncheck 'Direct flights only' to break up your trip, or visit a new city along the way. Here's where you can stop between CUN and STL:

    • Kansas City International Airport

    • Hartsfield-Jackson Atlanta International Airport

    • William P. Hobby Airport

How to find the cheapest flights from Cancun International Airport (CUN) to Lambert-St. Louis International Airport (STL)

  • $142 is currently the best price for a one-way Cancun International Airport to Lambert-St. Louis International Airport flight. Return flights start from $262. These fares may change based on demand and availability.

  • To score cheap tickets from CUN to STL, reserve your journey six months before your planned departure.

  • The cheapest month for flights from Cancun International Airport to Lambert-St. Louis International Airport is May. Use the 'Whole month' tool to find the lowest airfares if you have flexible dates.

  • You won't have to check every day to see if fares have gone down when you create a Price Alert. We'll let you know the moment a special offer becomes available on cheap flights from CUN to STL.

  • Lock in the ideal flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Cancun International Airport to Lambert-St. Louis International Airport, use the 'Sort by' tool. You can also filter by airline, arrival and departure times, and number of stops.

Handy information about Cancun International Airport (CUN)

  • Of the flights that depart from Cancun International Airport, 72.87% arrive as scheduled at their destination.

  • Cancun International Airport is about 12 miles from central Cancun. If you're ride-sharing, catching a cab or driving from the center, it'll take 25 minutes or so to get there, depending on the traffic.

  • Have an early flight from Cancun International Airport to Lambert-St. Louis International Airport? Avoid the last-minute rush to the airport (and enjoy a little extra shut-eye) by choosing one of these stays near CUN:

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • The street address for STL is 10701 Lambert International Blvd..

  • Lambert-St. Louis International Airport to the center of St Louis has a drive time of around 20 minutes. It's approximately 16 miles away.

  • Getting there on public transport typically takes 35 minutes.

When to fly to Lambert-St. Louis International Airport (STL)

  • The quietest month for a flight from Cancun International Airport to Lambert-St. Louis International Airport is April, while July is the busiest. Choose the ideal time to go to St Louis based on whether you prefer a more fast-paced or easygoing experience.

  • When reserving your flight from Cancun International Airport to Lambert-St. Louis International Airport, think about the type of weather you enjoy. July is the warmest month in St Louis, with temperatures ranging from 63ºF to 91ºF.

  • Search for cheap tickets from CUN to STL in January if you like traveling in cooler conditions. Temperatures are at their lowest around then, ranging between 18ºF and 45ºF on average.

Explore more of United States

  • St Louis has plenty going for it, but there are so many other corners of United States you should also see. About 260 miles north-east of St Louis, a trip to Chicago will keep you on the go. Start with attractions like Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • Around 230 miles east of St Louis, Indianapolis is another essential stop in United States. Get a taste of what this destination has to offer at The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.