Seattle (SEA) Delays in 2026
80.8% on-time departures, 82.3% on-time arrivals in 2026
63,185Flights
80.8%Departures on-time
12 minAvg dep. delay
82.3%Arrivals on-time
11.5 minAvg arr. delay
1.1%Cancelled
Delay causes
- Air carrier45.4%
- Extreme weather7.6%
- National Aviation System21.6%
- Security0.1%
- Late-arriving aircraft25.3%
← 2025 · Seattle (SEA) overview
On-time = arrival within 15 minutes of schedule, per U.S. DOT definitions. Source: Bureau of Transportation Statistics (public domain). Delay-cause attribution is reported by carriers since June 2003.