St Louis to Cancún (STL–CUN) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
STL–CUN is served by 2 airlines with nonstop service. Southwest Airlines and Frontier lead the route. The flight covers 1,241 miles in approximately 3h 10m. Beyond nonstop, 48 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| WN Southwest Airlines | 14 | 737 | 3h10-4h16 | – | – | |
| F9 Frontier | 7 | 321 | 3h30 | – | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Travel Essentials
STL: EDT · CUN: EST
When it's 6:00 PM in St Louis, it's 5:00 PM in Cancún.
US citizens enter Mexico visa-free for up to 180 days for tourism. Complete the immigration form (FMM) online or on arrival; the online version speeds up processing. Passport must be valid for the duration of stay.
Duty-free allowances: USD 500 in goods. Mexico prohibits importing certain foods and medications without documentation. Declare cash over USD 10,000.
Authorised airport taxis operate from a voucher desk inside each terminal. Fares to the Hotel Zone run MXN 350–550 (USD $17–28) and to downtown Cancún MXN 200–300. Purchase tickets inside before exiting to avoid touts. ADO buses depart from outside Terminal 2 to downtown Cancún for MXN 102 and continue to Playa del Carmen and Tulum.The Tren Maya connects Terminal 4 to Playa del Carmen, Tulum, and the broader Yucatán Peninsula. Car rental desks are located in all terminals; driving is straightforward on Highway 307.
Tropical climate with two distinct seasons. Dry season (December–April) brings warm, sunny weather at 25–32°C with low humidity, the peak tourist season and most reliable flying conditions. Wet season (May–November) is hot, humid, and prone to heavy afternoon downpours; thunderstorms can cause short ground delays.
Hurricane season runs June through November, peaking in September–October. Major storms (e.g., Wilma 2005, Zeta 2020) can close the airport for 12–48 hours. Monitor forecasts carefully from August through October. September is statistically the highest-risk month.
STL–CUN Quick Facts
Frequently Asked Questions
Flights from STL to CUN
St. Louis Lambert International Airport (STL) and Cancún International Airport (CUN) are connected by nonstop service from Frontier and Southwest Airlines. With 21 weekly departures, this is a well served route.
STL to CUN Flight Duration and Schedule
Nonstop flight time from STL to CUN ranges from 3 hours 10 minutes to 4 hours 16 minutes. The route covers a distance of 1,241 miles (1,997 km). There are approximately 21 weekly flights outbound and 19 return, totaling 40 flights per week in both directions.
Connecting Options and Alternatives
48 one-stop connections are available, with the fastest taking approximately 6 hours via APF. Two-stop connections are also available via intermediate hubs.