Direct (nonstop) flights from Saint Louis to Cancun
3 airlines fly nonstop from Saint Louis Airport (STL) to Cancun International Airport (CUN). It's 1,237 miles (1,991 km), about 3h 10m in the air. Operated by American Airlines, Frontier Airlines, Southwest Airlines.
American Airlines
Frontier Airlines
Southwest Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
AA
American Airlines
F9
Frontier Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Saint Louis to Cancun with one stop · direct emits 209 kg CO₂ per passenger
Looking for the return flight?
CUN → STL: Flights from Cancun to Saint LouisOther direct flights from Saint Louis
Direct flights from Cancun (CUN)
Frequently Asked Questions
How long is the direct flight from Saint Louis to Cancun?
A nonstop flight from Saint Louis (STL) to Cancun (CUN) takes approximately 3 hours and 10 minutes. The distance is 1,237 miles (1,991 km).
Which airlines fly nonstop from Saint Louis to Cancun?
3 airlines: American Airlines, Frontier Airlines, Southwest Airlines.
Is there a nonstop flight from Saint Louis to Cancun?
Yes. 3 airlines: American Airlines, Frontier Airlines, Southwest Airlines.
How far is Saint Louis from Cancun?
The flight distance from Saint Louis to Cancun is 1,237 miles (1,991 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Miami.
What type of aircraft flies from Saint Louis to Cancun?
At 3h 10m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
Do I need a visa to travel from USA to Mexico?
Depends on your passport. Check with the Mexico embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from Saint Louis to Cancun?
Roughly 209 kg CO2 per passenger one-way. That's about the same as driving 1,045 km.
Is the return flight from Cancun to Saint Louis also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Saint Louis to Cancun?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Saint Louis Airport for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.