Route
MSY → SEA
Louis Armstrong New Orleans International Airport Seattle–Tacoma International Airport
2,086 miles
Return route SEA → MSY →
How punctual is this route?
- On-time arrivals
- 72.4%
- Less than 15 minutes late
- Cancelled
- 0.8%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 619
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Airline (crew, maintenance, cleaning) 27%
- Air traffic control & airport 24%
- Extreme weather 3%
- Security 2%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 78.7% | 48 |
| October 2025 | 63.5% | 53 |
| November 2025 | 69.0% | 59 |
| December 2025 | 66.7% | 54 |
| January 2026 | 77.8% | 36 |
| February 2026 | 81.2% | 32 |
| March 2026 | 60.5% | 44 |
| April 2026 | 86.7% | 60 |
| May 2026 | 75.8% | 62 |
| June 2026 | 65.5% | 60 |
| July 2026 | 72.1% | 61 |
| August 2026 | 74.0% | 50 |
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 |
|---|---|---|---|---|
| Alaska Airlines | 614 | 72.2% | 0.8% | 60 min |
| Delta Air Lines | 5 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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