Route
MSY → STL
Louis Armstrong New Orleans International Airport St. Louis Lambert International Airport
How punctual is this route?
- On-time arrivals
- 82.6%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 57 min
- Flights arriving 15+ minutes late
- Flights tracked
- 733
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 68%
- Airline (crew, maintenance, cleaning) 22%
- Air traffic control & airport 6%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 89.4% | 47 |
| October 2025 | 82.9% | 82 |
| November 2025 | 82.8% | 58 |
| December 2025 | 90.0% | 60 |
| January 2026 | 95.2% | 63 |
| February 2026 | 81.4% | 70 |
| March 2026 | 74.6% | 68 |
| April 2026 | 80.0% | 61 |
| May 2026 | 71.7% | 61 |
| June 2026 | 76.4% | 56 |
| July 2026 | 77.6% | 58 |
| August 2026 | 91.8% | 49 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 733 | 82.6% | 0.3% | 57 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN3020
4% late · 74 flights
-
WN2894
5% late · 58 flights
-
WN3021
47% late · 52 flights
-
WN2782
37% late · 49 flights
-
WN2948
7% late · 45 flights
-
WN600
19% late · 42 flights
-
WN290
11% late · 39 flights
-
WN212
45% late · 33 flights
-
WN1427
0% late · 31 flights
-
WN752
23% late · 31 flights
-
WN1294
7% late · 28 flights
-
WN3650
8% late · 26 flights
-
WN2280
28% late · 25 flights
-
WN2427
13% late · 25 flights
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