Flights on BOS–SFO arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
Median delayon timetypical arrival
p90 delay40 min1 in 10 flights is worsetail risk
Cancelled0.5%of scheduled flights
based on 4,531 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time81%Medianon timep9030 minCancel0.3%Flights1,772
- Delta Air LinesOn-time76%Medianon timep9045 minCancel0.6%Flights863
- JetBlue AirwaysOn-time78%Medianon timep9045 minCancel0.7%Flights1,556
- Alaska AirlinesOn-time68%Medianon timep9060 minCancel0.3%Flights340
Why flights run late
Delay causes
- Airline26%
- Weather2%
- Air traffic (NAS)31%
- Late aircraft41%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
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