St. Louis Lambert International ⇄ Cancun STL–CUN
Airlines flew 1,727 flights between St. Louis Lambert International STL in St Louis, MO and Cancun, Mexico CUN in Cancun, MX in the twelve months to July 2026, both directions together: 250,885 passengers in 328,905 seats, 76% of them filled, and 1,911 pounds of freight. 1,237 miles, about 163 minutes in the air, on 6 airlines: Southwest Airlines Co. (958), Frontier Airlines Inc. (723), American Airlines Inc. (42), Sun Country Airlines d/b/a MN Airlines (2) and 2 more.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 132 |
| 2/25 | 140 |
| 3/25 | 155 |
| 4/25 | 128 |
| 5/25 | 133 |
| 6/25 | 171 |
| 7/25 | 188 |
| 8/25 | 115 |
| 9/25 | 101 |
| 10/25 | 138 |
| 11/25 | 136 |
| 12/25 | 154 |
| 1/26 | 150 |
| 2/26 | 142 |
| 3/26 | 151 |
| 4/26 | 132 |
| 5/26 | 134 |
| 6/26 | 181 |
| 7/26 | 193 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 21,169 |
| 2/25 | 22,876 |
| 3/25 | 24,816 |
| 4/25 | 18,675 |
| 5/25 | 19,949 |
| 6/25 | 25,795 |
| 7/25 | 27,115 |
| 8/25 | 16,581 |
| 9/25 | 14,225 |
| 10/25 | 19,842 |
| 11/25 | 17,870 |
| 12/25 | 20,486 |
| 1/26 | 22,616 |
| 2/26 | 21,455 |
| 3/26 | 20,947 |
| 4/26 | 18,157 |
| 5/26 | 20,679 |
| 6/26 | 27,935 |
| 7/26 | 30,092 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Southwest Airlines Co. WN | 958 | 117,130 | 77% | scheduled passenger service |
| Frontier Airlines Inc. F9 | 723 | 128,360 | 76% | scheduled passenger service |
| American Airlines Inc. AA | 42 | 4,717 | 65% | scheduled passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 2 | 321 | 86% | charter passenger service |
| Delta Air Lines Inc. DL | 1 | 164 | 87% | scheduled passenger service |
| United Air Lines Inc. UA | 1 | 193 | 96% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing B737 Max 800 | 425 | 175 | 56,697 |
| Boeing 737-700/700LR/Max 7 | 418 | 139 | 44,910 |
| Airbus Industrie A321-200n | 410 | 240 | 74,860 |
| Airbus Industrie A321Neoxlr | 266 | 230 | 46,570 |
| Boeing 737-800 | 159 | 174 | 20,561 |
| Airbus Industrie A320-200n | 47 | 186 | 6,971 |
| Airbus Industrie A320-100/200 | 2 | 186 | 316 |
STL → CUN this direction alone · flown January 2025 to July 2026
860 flights of 859 scheduled, 123,757 passengers in 163,386 seats. Southwest Airlines Co. 478; Frontier Airlines Inc. 361; American Airlines Inc. 20; Sun Country Airlines d/b/a MN Airlines 1.
CUN → STL this direction alone · flown January 2025 to July 2026
867 flights of 862 scheduled, 127,128 passengers in 165,519 seats, 1,911 pounds of freight. Southwest Airlines Co. 480; Frontier Airlines Inc. 362; American Airlines Inc. 22; Delta Air Lines Inc. 1; Sun Country Airlines d/b/a MN Airlines 1; United Air Lines Inc. 1.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: St. Louis Lambert International STL and Cancun, Mexico CUN; all routes.