Boston (BOS) Delays in 2021
86.1% on-time departures, 83.7% on-time arrivals in 2021
90,118Flights
86.1%Departures on-time
10.1 minAvg dep. delay
83.7%Arrivals on-time
12.1 minAvg arr. delay
1.3%Cancelled
Delay causes
- Air carrier44.8%
- Extreme weather3.3%
- National Aviation System25%
- Security0.2%
- Late-arriving aircraft26.8%
← 2020 · Boston (BOS) overview · 2022 →
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.