Flight AS550
Alaska Airlines flight AS550
Looking for AS550 in the air…
Dallas-Fort Worth (DFW) to Seattle (SEA)
Historically, this flight arrives 15+ minutes late 34% of the time, and when it is late the delay averages 46 minutes. It was cancelled 1.0% of the time.
- On-time arrivals
- 66.3%
- Less than 15 minutes late
- Cancelled
- 1.0%
- Of scheduled flights
- Average delay when late
- 46 min
- Flights arriving 15+ minutes late
- Flights tracked
- 207
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 71%
- Air traffic control & airport 22%
- Airline (crew, maintenance, cleaning) 4%
- Security 1%
- Extreme weather 1%
Share of delay minutes airlines attributed to each cause (BTS).
Seattle (SEA) to Boise (BOI)
Historically, this flight arrives 15+ minutes late 25% of the time, and when it is late the delay averages 34 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 75.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 34 min
- Flights arriving 15+ minutes late
- Flights tracked
- 48
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 62%
- Airline (crew, maintenance, cleaning) 29%
- Air traffic control & airport 10%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Jose (SJC) to Portland (PDX)
Historically, this flight arrives 15+ minutes late 3% of the time, and when it is late the delay averages 115 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 96.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 115 min
- Flights arriving 15+ minutes late
- Flights tracked
- 29
- 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).
San Jose (SJC) to Seattle (SEA)
Only 3 flights on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 3
- Scheduled flights in the period
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 56.2% | 17 |
| October 2025 | 50.0% | 29 |
| November 2025 | 85.0% | 20 |
| December 2025 | 66.7% | 24 |
| January 2026 | 20.0% | 5 |
| February 2026 | 100.0% | 18 |
| March 2026 | 92.9% | 28 |
| April 2026 | 76.7% | 30 |
| May 2026 | 76.7% | 30 |
| June 2026 | 66.7% | 30 |
| July 2026 | 70.0% | 30 |
| August 2026 | 57.7% | 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