Louis Armstrong New Orleans International (MSY) Delays and On-Time Departures
New Orleans, LA · ranked 258th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, New Orleans (MSY) had 49,152 scheduled departures and 77.2% of them left on time (US average 77.4%).
That ranks 258th of 333 US airports tracked on this site, with 1.5% of departures cancelled.
United Airlines was the most punctual airline here, with 86.5% of departures on time.
September has been the best month (85% on time) and Sunday the weakest day of the week (72%).
Best time of day to fly out of New Orleans (MSY)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 2 | |
| 1am–2am | Limited data | 1 | |
| 2am–3am | Limited data | 2 | |
| 5am–6am | 93.3% | 1.6% | 5,433 |
| 6am–7am | 92.0% | 1.9% | 8,270 |
| 7am–8am | 90.4% | 1.3% | 7,879 |
| 8am–9am | 90.0% | 1.4% | 4,092 |
| 9am–10am | 86.5% | 1.8% | 5,602 |
| 10am–11am | 83.5% | 1.9% | 7,312 |
| 11am–12pm | 80.0% | 2.0% | 6,597 |
| 12pm–1pm | 77.4% | 1.8% | 5,206 |
| 1pm–2pm | 75.0% | 1.7% | 4,720 |
| 2pm–3pm | 71.4% | 1.2% | 7,651 |
| 3pm–4pm | 70.1% | 1.6% | 6,229 |
| 4pm–5pm | 69.2% | 2.0% | 6,223 |
| 5pm–6pm | 68.6% | 2.1% | 7,382 |
| 6pm–7pm | 63.5% | 1.6% | 6,947 |
| 7pm–8pm | 68.0% | 2.0% | 5,989 |
| 8pm–9pm | 65.0% | 1.6% | 2,609 |
| 9pm–10pm | 62.9% | 2.1% | 1,559 |
| 10pm–11pm | 68.2% | 0.5% | 376 |
Airlines at MSY ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| United Airlines | 86.5% | 84.2% | 0.7% | 6,807 |
| Delta Air Lines | 83.4% | 83.7% | 2.2% | 7,569 |
| Republic Airways | 83.0% | 82.5% | 3.2% | 824 |
| Envoy Air | 82.4% | 79.2% | 1.8% | 792 |
| SkyWest Airlines | 80.5% | 78.5% | 0.7% | 577 |
| Spirit Airlines | 77.3% | 76.8% | 2.8% | 2,614 |
| Allegiant Air | 76.8% | 77.8% | 2.0% | 101 |
| American Airlines | 75.7% | 76.6% | 2.1% | 7,504 |
| Alaska Airlines | 75.1% | 73.9% | 0.9% | 736 |
| PSA Airlines | 72.6% | 73.1% | 5.7% | 913 |
| Southwest Airlines | 72.4% | 76.4% | 0.6% | 18,308 |
| JetBlue | 69.7% | 68.3% | 3.0% | 1,373 |
| Frontier Airlines | 69.1% | 68.1% | 2.2% | 1,034 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of MSY
On-time departures by day, 24 months.
Best month to fly out of MSY
On-time departures by month, 24 months.
Holiday travel at New Orleans (MSY)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 80.5% | +1.0 pts | 0.6% | 1,934 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.2% | -4.3 pts | 1.6% | 4,029 |
| Summer peak (Jun 15 - Aug 15) | 69.8% | -9.7 pts | 1.8% | 15,735 |
| All other days | 79.5% | — | 1.8% | 78,383 |
Monthly on-time departure trend at MSY
On-time departure % each month, with the 12-month US average for reference.
Routes from New Orleans (MSY)
Every route from MSY with its own page, by number of flights (last 12 months, on-time arrivals).