Seattle (SEA) Delays
#17 U.S. airport by BTS-tracked flight volume · 78.4% on-time departures, 79% on-time arrivals over the last 12 months · 2015–2026
165,477Flights
78.4%Departures on-time
13.3 minAvg dep. delay
79%Arrivals on-time
13.4 minAvg arr. delay
1%Cancelled
Delay causes (last 12 months)
- Air carrier42.6%
- Extreme weather4.5%
- National Aviation System22.1%
- Security0.3%
- Late-arriving aircraft30.5%
By year
| Year | Flights | Dep on-time | Arr on-time | Avg dep delay | Cancelled |
|---|---|---|---|---|---|
| 2026 | 63,185 | 80.8% | 82.3% | 12 min | 1.1% |
| 2025 | 164,835 | 78.6% | 78.7% | 12.9 min | 0.8% |
| 2024 | 163,724 | 79.3% | 80.5% | 12.5 min | 1.1% |
| 2023 | 163,812 | 82.3% | 83.5% | 11.2 min | 0.6% |
| 2022 | 174,009 | 82.2% | 82.3% | 11.3 min | 2% |
| 2021 | 168,025 | 85.5% | 85.5% | 8.9 min | 1.4% |
| 2020 | 101,212 | 90.8% | 90.2% | 5.6 min | 3.7% |
| 2019 | 142,857 | 82.7% | 80.6% | 11 min | 0.8% |
| 2018 | 139,949 | 84.3% | 80.6% | 9.6 min | 0.5% |
| 2017 | 137,176 | 83.6% | 81.2% | 10 min | 0.6% |
| 2016 | 132,625 | 85.7% | 84% | 8.7 min | 0.4% |
| 2015 | 121,287 | 84.6% | 83.8% | 9.1 min | 0.4% |
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.