Louis Armstrong New Orleans International ⇄ St. Louis Lambert International MSY–STL
Airlines flew 1,469 flights between Louis Armstrong New Orleans International MSY in New Orleans, LA and St. Louis Lambert International STL in St Louis, MO in the twelve months to July 2026, both directions together: 140,780 passengers in 239,742 seats, 59% of them filled, and 222,680 pounds of freight. 604 miles, about 87 minutes in the air, on 3 airlines: Southwest Airlines Co. (1,464), Sun Country Airlines d/b/a MN Airlines (4), United Air Lines Inc. (1). Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 108 |
| 2/25 | 142 |
| 3/25 | 136 |
| 4/25 | 124 |
| 5/25 | 119 |
| 6/25 | 115 |
| 7/25 | 114 |
| 8/25 | 96 |
| 9/25 | 94 |
| 10/25 | 167 |
| 11/25 | 115 |
| 12/25 | 121 |
| 1/26 | 127 |
| 2/26 | 141 |
| 3/26 | 136 |
| 4/26 | 121 |
| 5/26 | 121 |
| 6/26 | 112 |
| 7/26 | 118 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 9,568 |
| 2/25 | 13,557 |
| 3/25 | 14,552 |
| 4/25 | 13,843 |
| 5/25 | 13,674 |
| 6/25 | 10,309 |
| 7/25 | 9,805 |
| 8/25 | 9,121 |
| 9/25 | 9,705 |
| 10/25 | 16,541 |
| 11/25 | 11,411 |
| 12/25 | 10,853 |
| 1/26 | 11,207 |
| 2/26 | 13,170 |
| 3/26 | 13,562 |
| 4/26 | 11,726 |
| 5/26 | 12,375 |
| 6/26 | 10,808 |
| 7/26 | 10,301 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Southwest Airlines Co. WN | 1,464 | 140,329 | 59% | scheduled passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 4 | 341 | 46% | charter passenger service |
| United Air Lines Inc. UA | 1 | 110 | 73% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing B737 Max 800 | 594 | 175 | 58,290 |
| Boeing 737-700/700LR/Max 7 | 498 | 140 | 44,570 |
| Boeing 737-800 | 376 | 175 | 37,810 |
| Airbus Industrie A320-100/200 | 1 | 150 | 110 |
MSY → STL this direction alone · flown January 2025 to July 2026
734 flights of 732 scheduled, 69,998 passengers in 119,922 seats, 181,675 pounds of freight. Southwest Airlines Co. 730; Sun Country Airlines d/b/a MN Airlines 3; United Air Lines Inc. 1.
STL → MSY this direction alone · flown January 2025 to July 2026
735 flights of 733 scheduled, 70,782 passengers in 119,820 seats, 41,005 pounds of freight. Southwest Airlines Co. 734; Sun Country Airlines d/b/a MN Airlines 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: Louis Armstrong New Orleans International MSY and St. Louis Lambert International STL; all routes.