St Louis (STL) to Cancún (CUN) flights
Southwest Airlines, Frontier Airlines fly nonstop from St. Louis Lambert International Airport to Cancún International Airport, with about 22 flights a week in July 2026. The 1,237-mile flight takes about 3h 10m gate to gate.
From
STL
St Louis
St. Louis Lambert International Airport
To
CUN
Cancún
Cancún International Airport
- Distance
- 1,237 mi · 1,991 km
- Flight time
- 3h 10m
- Airlines
- 2
- Seats filled
- 76%
Flights a week, July 2026
859 flights and 123,596 passengers in 12 months
Airlines flying STL to CUN
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 15 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 56,901 | 3h 8m |
| Frontier Airlines | 7 | Airbus A321, Airbus A320neo, Airbus A320-100/200 | 64,326 | 3h 12m |
| American AirlinesSeasonal or ended | n/a | Boeing 737-800, Boeing 737 MAX 8 | 2,369 | 3h 39m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 57 | 7,847 | |
| September 2025 | 51 | 6,759 | |
| October 2025 | 69 | 10,439 | |
| November 2025 | 68 | 8,470 | |
| December 2025 | 76 | 10,529 | |
| January 2026 | 74 | 10,403 | |
| February 2026 | 71 | 10,348 | |
| March 2026 | 74 | 10,404 | |
| April 2026 | 65 | 8,698 | |
| May 2026 | 67 | 10,371 | |
| June 2026 | 91 | 14,162 | |
| July 2026 | 96 | 15,166 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.