Nonstop flights from St. Louis to Cancún
2 airlines fly this route, with up to 2 flights a day.
STLSt. Louis Lambert International
1,240 mi · 12 flights a week
CUNCancún Cancun International
When they leave
St. Louis time6:34a10:25aFirst departure 6:34 AM, last 10:25 AM
Two in the morning, 6:34 AM to 10:25 AM.
Every flight
Earliest first
Schedules last checked Sep 19, 2026. Times are local.
Flying from St. Louis to Cancún
Frontier Airlines flies 6 times a week on the Airbus A321neo. Southwest Airlines flies 6 times a week on the Boeing 737-700.
There are 1 or 2 flights every day of the week. The first arrival in Cancún is at 9:50 AM and the last at 1:30 PM. The flight covers 1,240 miles.
Flying back, Cancún to St. Louis has 12 nonstop flights a week.
Return flights
More from St. Louis
Find the cheapest day to fly from St. Louis to Cancún.
Schedules as of Oct 9, 2026.