Historical on-time performance
Boston to San Diego
Flights on BOS–SAN arrive on time 77% of the time over the last 12 months.
based on 1,674 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- JetBlue AirwaysbestOn-time85%Medianon timep9025 minCancel1.1%Flights915
- Alaska AirlinesOn-time67%Medianon timep9055 minCancel1.5%Flights452
- Delta Air LinesOn-time66%Medianon timep9045 minCancel1.3%Flights307
Why flights run late
Delay causes
- Airline29%
- Weather3%
- Air traffic (NAS)31%
- Late aircraft37%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline29%
- Weather67%
- Air traffic (NAS)5%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 21 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BOS → SAN
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 68% to 84% on time.
- Middays84% on time · p90 25 min · 194 flights · limited
- Mornings81% on time · p90 30 min · 1,478 flights
- Afternoons77% on time · p90 40 min · 1,520 flights
- Evenings68% on time · p90 45 min · 1,612 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 78% on time.
- Wednesdays78% on time · p90 35 min · 692 flights
- Tuesdays77% on time · p90 30 min · 683 flights
- Mondays77% on time · p90 40 min · 712 flights
- Sundays76% on time · p90 40 min · 716 flights
- Thursdays76% on time · p90 35 min · 709 flights
- Fridays73% on time · p90 45 min · 718 flights
- Saturdays71% on time · p90 50 min · 574 flights
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