Historical on-time performance
Boston to Sacramento
2,636 miData through Dec 2025Source: US DOT · BTS
Flights on BOS–SMF arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 123 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- JetBlue AirwaysOn-time74%Medianon timep9055 minCancel0.0%Flights123
Why flights run late
Delay causes
- Airline30%
- Weather2%
- Air traffic (NAS)38%
- Late aircraft29%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BOS → SMF
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Evenings are the most reliable time of day to fly this route — 66% on time.
- Evenings66% on time · p90 80 min · 184 flights · limited
- Afternoons51% on time · p90 110 min · 149 flights · limited
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