Flight AS677
Alaska Airlines flight AS677
Looking for AS677 in the air…
Seattle (SEA) to Raleigh/Durham (RDU)
Historically, this flight arrives 15+ minutes late 14% of the time, and when it is late the delay averages 46 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 86.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 46 min
- Flights arriving 15+ minutes late
- Flights tracked
- 143
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 43%
- Airline (crew, maintenance, cleaning) 37%
- Air traffic control & airport 20%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Seattle (SEA) to Salt Lake City (SLC)
Historically, this flight arrives 15+ minutes late 18% of the time, and when it is late the delay averages 49 minutes. It was cancelled 1.6% of the time.
- On-time arrivals
- 81.7%
- Less than 15 minutes late
- Cancelled
- 1.6%
- Of scheduled flights
- Average delay when late
- 49 min
- Flights arriving 15+ minutes late
- Flights tracked
- 61
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 64%
- Late-arriving aircraft 33%
- Air traffic control & airport 3%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Missoula (MSO) to Seattle (SEA)
Only 16 flights on record, which is too few for reliable odds.
- On-time arrivals
- 68.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 34 min
- Flights arriving 15+ minutes late
- Flights tracked
- 16
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 70%
- Airline (crew, maintenance, cleaning) 23%
- Extreme weather 6%
- Late-arriving aircraft 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| November 2025 | 66.7% | 9 |
| December 2025 | 74.1% | 27 |
| January 2026 | 89.7% | 29 |
| February 2026 | 75.0% | 24 |
| March 2026 | 75.0% | 21 |
| April 2026 | 90.5% | 21 |
| May 2026 | 100.0% | 12 |
| June 2026 | 100.0% | 21 |
| July 2026 | 80.0% | 30 |
| August 2026 | 84.6% | 26 |
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