Washington (IAD) Delays
#32 U.S. airport by BTS-tracked flight volume · 82.4% on-time departures, 82% on-time arrivals over the last 12 months · 2015–2026
58,239Flights
82.4%Departures on-time
15.9 minAvg dep. delay
82%Arrivals on-time
14.5 minAvg arr. delay
1.4%Cancelled
Delay causes (last 12 months)
- Air carrier31.6%
- Extreme weather8.7%
- National Aviation System25.3%
- Security0.1%
- Late-arriving aircraft34.4%
By year
| Year | Flights | Dep on-time | Arr on-time | Avg dep delay | Cancelled |
|---|---|---|---|---|---|
| 2026 | 23,585 | 84.9% | 84.7% | 13.7 min | 1.8% |
| 2025 | 57,546 | 82% | 81.2% | 15.7 min | 1.1% |
| 2024 | 52,891 | 83.9% | 83.7% | 13.5 min | 1.4% |
| 2023 | 49,815 | 82.5% | 81.9% | 14.5 min | 1.2% |
| 2022 | 56,659 | 81.1% | 82.2% | 15.7 min | 2.4% |
| 2021 | 50,538 | 84% | 83.8% | 13.3 min | 1.5% |
| 2020 | 41,668 | 91.1% | 91.1% | 7.7 min | 5.9% |
| 2019 | 69,223 | 84.1% | 82.5% | 15.3 min | 1.4% |
| 2018 | 68,699 | 84.5% | 82.1% | 13.7 min | 1.6% |
| 2017 | 36,765 | 84.8% | 85% | 12.9 min | 1% |
| 2016 | 34,440 | 84.7% | 85.3% | 12 min | 1.5% |
| 2015 | 37,301 | 79.7% | 81.8% | 14.5 min | 1.5% |
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.