Flight AS277
Alaska Airlines flight AS277
Looking for AS277 in the air…
Seattle (SEA) to Bozeman (BZN)
Historically, this flight arrives 15+ minutes late 18% of the time, and when it is late the delay averages 58 minutes. It was cancelled 1.8% of the time.
- On-time arrivals
- 82.1%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 58 min
- Flights arriving 15+ minutes late
- Flights tracked
- 165
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 45%
- Late-arriving aircraft 33%
- Air traffic control & airport 17%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Philadelphia (PHL) to Seattle (SEA)
Historically, this flight arrives 15+ minutes late 27% of the time, and when it is late the delay averages 40 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 72.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 40 min
- Flights arriving 15+ minutes late
- Flights tracked
- 70
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 47%
- Late-arriving aircraft 41%
- Airline (crew, maintenance, cleaning) 12%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sacramento (SMF) to Portland (PDX)
Historically, this flight arrives 15+ minutes late 5% of the time, and when it is late the delay averages 473 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 95.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 473 min
- Flights arriving 15+ minutes late
- Flights tracked
- 21
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 100%
- Late-arriving aircraft 0%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| October 2025 | 83.3% | 6 |
| November 2025 | 74.1% | 29 |
| December 2025 | 71.0% | 31 |
| January 2026 | 85.7% | 28 |
| February 2026 | 88.5% | 26 |
| March 2026 | 86.4% | 23 |
| April 2026 | 94.4% | 18 |
| May 2026 | 91.7% | 12 |
| June 2026 | 66.7% | 21 |
| July 2026 | 83.9% | 31 |
| August 2026 | 74.2% | 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