Best Time to Fly HOU to MSY: On-Time Stats by Hour & Airline
William P Hobby → Louis Armstrong New Orleans International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 83.0% of Houston (HOU) to New Orleans (MSY) flights arrived on time (2,297 scheduled flights). That is 5.4 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
September has been the best month (90% on time) and Thursday the weakest day of the week (81%).
0.2% of flights were cancelled, versus 1.8% nationally.
HOU to MSY on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 83.0% | 51 min | 0.2% | 2,297 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly HOU to MSY
On-time arrival % by scheduled departure hour (local time), 4,574 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 96.4% | 0.0% | 112 |
| 6am–7am | 97.1% | 0.8% | 241 |
| 7am–8am | 96.3% | 1.8% | 278 |
| 8am–9am | 95.4% | 1.4% | 510 |
| 9am–10am | 92.3% | 0.0% | 130 |
| 10am–11am | 88.6% | 0.0% | 273 |
| 11am–12pm | 86.4% | 1.4% | 357 |
| 12pm–1pm | 81.5% | 0.0% | 124 |
| 1pm–2pm | 80.9% | 0.0% | 183 |
| 2pm–3pm | 75.5% | 0.8% | 378 |
| 3pm–4pm | 80.8% | 0.4% | 267 |
| 4pm–5pm | 72.3% | 0.8% | 120 |
| 5pm–6pm | 79.1% | 0.0% | 196 |
| 6pm–7pm | 74.9% | 0.8% | 362 |
| 7pm–8pm | 79.9% | 0.7% | 145 |
| 8pm–9pm | 79.5% | 1.1% | 449 |
| 9pm–10pm | 74.7% | 0.4% | 234 |
| 10pm–11pm | 72.8% | 0.9% | 215 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on HOU to MSY
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 86.1% | +1.0 pts | 1.2% | 80 |
| Christmas & New Year (Dec 20 - Jan 3) | 83.0% | -2.0 pts | 0.0% | 167 |
| Summer peak (Jun 15 - Aug 15) | 78.0% | -7.1 pts | 0.1% | 759 |
| All other days | 85.0% | — | 0.9% | 3,568 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).