Historical on-time performance
Los Angeles to Boston
2,611 miData through Dec 2025Source: US DOT · BTS
Flights on LAX–BOS arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
Median delayon timetypical arrival
p90 delay40 min1 in 10 flights is worsetail risk
Cancelled0.4%of scheduled flights
based on 4,556 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time79%Medianon timep9045 minCancel0.8%Flights1,168
- United AirlinesbestOn-time85%Medianon timep9025 minCancel0.1%Flights733
- American AirlinesOn-time80%Medianon timep9045 minCancel0.0%Flights916
- JetBlue AirwaysOn-time80%Medianon timep9050 minCancel0.6%Flights1,739
Why flights run late
Delay causes
- Airline31%
- Weather2%
- Air traffic (NAS)32%
- Late aircraft34%
- 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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