Boston (BOS) Delays
#14 U.S. airport by BTS-tracked flight volume · 76.3% on-time departures, 73% on-time arrivals over the last 12 months · 2015–2026
142,771Flights
76.3%Departures on-time
18.4 minAvg dep. delay
73%Arrivals on-time
21 minAvg arr. delay
2.6%Cancelled
Delay causes (last 12 months)
- Air carrier28.4%
- Extreme weather2.7%
- National Aviation System26.9%
- Security0.1%
- Late-arriving aircraft41.9%
By year
| Year | Flights | Dep on-time | Arr on-time | Avg dep delay | Cancelled |
|---|---|---|---|---|---|
| 2026 | 58,149 | 78.5% | 76.3% | 16 min | 3.5% |
| 2025 | 142,859 | 77.1% | 73.9% | 18.1 min | 1.7% |
| 2024 | 143,490 | 79.7% | 77.2% | 15.7 min | 1.5% |
| 2023 | 140,517 | 77.4% | 76.1% | 18 min | 1.8% |
| 2022 | 136,476 | 78.1% | 76.4% | 16.8 min | 3.3% |
| 2021 | 90,118 | 86.1% | 83.7% | 10.1 min | 1.3% |
| 2020 | 74,276 | 91.3% | 90.6% | 6 min | 6.3% |
| 2019 | 150,564 | 78.5% | 76% | 17.4 min | 2.1% |
| 2018 | 148,191 | 78.3% | 76.1% | 15.7 min | 2.6% |
| 2017 | 125,456 | 78.9% | 76.3% | 15.8 min | 2.1% |
| 2016 | 121,260 | 82% | 79.1% | 12.2 min | 1.2% |
| 2015 | 118,011 | 81.8% | 78.9% | 11.9 min | 2.3% |
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.