Boston (BOS) Delays in 2025
77.1% on-time departures, 73.9% on-time arrivals in 2025
142,859Flights
77.1%Departures on-time
18.1 minAvg dep. delay
73.9%Arrivals on-time
20.6 minAvg arr. delay
1.7%Cancelled
Delay causes
- Air carrier28.6%
- Extreme weather2.7%
- National Aviation System27.7%
- Security0.1%
- Late-arriving aircraft40.9%
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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.