Flight AS459
Alaska Airlines flight AS459
Looking for AS459 in the air…
Boston (BOS) to Seattle (SEA)
Historically, this flight arrives 15+ minutes late 28% of the time, and when it is late the delay averages 49 minutes. It was cancelled 0.8% of the time.
- On-time arrivals
- 72.3%
- Less than 15 minutes late
- Cancelled
- 0.8%
- Of scheduled flights
- Average delay when late
- 49 min
- Flights arriving 15+ minutes late
- Flights tracked
- 364
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 55%
- Airline (crew, maintenance, cleaning) 25%
- Late-arriving aircraft 16%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 83.3% | 30 |
| October 2025 | 90.3% | 31 |
| November 2025 | 89.7% | 29 |
| December 2025 | 27.6% | 31 |
| January 2026 | 75.9% | 31 |
| February 2026 | 73.1% | 28 |
| March 2026 | 38.7% | 31 |
| April 2026 | 80.0% | 30 |
| May 2026 | 83.9% | 31 |
| June 2026 | 86.7% | 30 |
| July 2026 | 80.6% | 31 |
| August 2026 | 58.1% | 31 |
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