Best Time to Fly SEA to MSY: On-Time Stats by Hour & Airline
Seattle/Tacoma International → Louis Armstrong New Orleans International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.9% of Seattle (SEA) to New Orleans (MSY) flights arrived on time (627 scheduled flights). That is 3.2 points above the national average of 77.6%.
Alaska Airlines was the only reporting airline with regular flights on this route.
October has been the best month (88% on time) and Thursday the weakest day of the week (72%).
0.3% of flights were cancelled, versus 1.8% nationally.
SEA 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 |
|---|---|---|---|---|
| Alaska Airlines | 80.7% | 41 min | 0.3% | 622 |
| Delta Air Lines | Limited data | 5 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to MSY
On-time arrival % by scheduled departure hour (local time), 1,291 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 4 | |
| 8am–9am | Limited data | 1 | |
| 9am–10am | 71.8% | 0.0% | 196 |
| 10am–11am | 81.8% | 1.2% | 331 |
| 11am–12pm | 75.6% | 0.5% | 210 |
| 5pm–6pm | 88.4% | 4.2% | 72 |
| 10pm–11pm | Limited data | 21 | |
| 11pm–12am | 77.7% | 0.4% | 456 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SEA 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) | Limited data | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 69.6% | -12.5 pts | 0.0% | 56 |
| Summer peak (Jun 15 - Aug 15) | 66.5% | -15.6 pts | 0.0% | 246 |
| All other days | 82.1% | — | 1.0% | 963 |
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).