Flight AS660
Alaska Airlines flight AS660
Looking for AS660 in the air…
Seattle (SEA) to Missoula (MSO)
Historically, this flight arrives 15+ minutes late 12% of the time, and when it is late the delay averages 64 minutes. It was cancelled 1.9% of the time.
- On-time arrivals
- 87.6%
- Less than 15 minutes late
- Cancelled
- 1.9%
- Of scheduled flights
- Average delay when late
- 64 min
- Flights arriving 15+ minutes late
- Flights tracked
- 157
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 47%
- Extreme weather 24%
- Airline (crew, maintenance, cleaning) 19%
- Air traffic control & airport 10%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Missoula (MSO) to Seattle (SEA)
Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 48 minutes. It was cancelled 2.6% of the time.
- On-time arrivals
- 79.6%
- Less than 15 minutes late
- Cancelled
- 2.6%
- Of scheduled flights
- Average delay when late
- 48 min
- Flights arriving 15+ minutes late
- Flights tracked
- 156
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 58%
- Air traffic control & airport 25%
- Airline (crew, maintenance, cleaning) 17%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Seattle (SEA) to Anchorage (ANC)
Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 45 minutes. It was cancelled 1.4% of the time.
- On-time arrivals
- 80.9%
- Less than 15 minutes late
- Cancelled
- 1.4%
- Of scheduled flights
- Average delay when late
- 45 min
- Flights arriving 15+ minutes late
- Flights tracked
- 70
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 54%
- Late-arriving aircraft 31%
- Air traffic control & airport 16%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| October 2025 | 90.9% | 11 |
| November 2025 | 79.6% | 58 |
| December 2025 | 72.6% | 62 |
| January 2026 | 89.7% | 62 |
| February 2026 | 90.9% | 22 |
| April 2026 | 88.9% | 18 |
| May 2026 | 89.1% | 46 |
| June 2026 | 87.1% | 31 |
| July 2026 | 80.0% | 31 |
| August 2026 | 78.0% | 42 |
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