Best Time to Fly MSY to SEA: On-Time Stats by Hour & Airline
Louis Armstrong New Orleans International → Seattle/Tacoma International
Data through July 2026 · Last updated October 18, 2026
626 flights were scheduled from New Orleans (MSY) to Seattle (SEA) in the last 12 months, and 71.8% of those that flew arrived on time, 5.9 points below the US average of 77.6%.
Alaska Airlines was the only reporting airline with regular flights on this route.
April has been the best month (83% on time) and Monday the weakest day of the week (69%).
0.8% of flights were cancelled, versus 1.8% nationally.
MSY to SEA 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 | 71.5% | 53 min | 0.8% | 621 |
| Delta Air Lines | Limited data | 5 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MSY to SEA
On-time arrival % by scheduled departure hour (local time), 1,290 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 75.1% | 1.0% | 610 |
| 8am–9am | Limited data | 1 | |
| 3pm–4pm | 80.3% | 3.2% | 63 |
| 4pm–5pm | 75.5% | 0.0% | 139 |
| 5pm–6pm | 63.6% | 2.1% | 191 |
| 6pm–7pm | 75.4% | 0.3% | 286 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MSY to SEA
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) | 76.8% | +0.9 pts | 0.0% | 56 |
| Summer peak (Jun 15 - Aug 15) | 66.5% | -9.3 pts | 0.4% | 246 |
| All other days | 75.9% | — | 1.2% | 962 |
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).