Historical on-time performance
Boston to Sacramento
2,636 miData through May 2026Source: 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 92 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%Flights92
Why flights run late
Delay causes
- Airline28%
- Weather0%
- Air traffic (NAS)43%
- Late aircraft30%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline0%
- Weather33%
- Air traffic (NAS)67%
- Security0%
Most cancellations here are attributed to Air traffic (NAS). Shares are among 3 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 → SMF
All airlines · rolling 36 months (2023-06 .. 2026-05).
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
- Afternoons49% on time · p90 110 min · 122 flights · limited
Keep exploring