Historical on-time performance
Boise to Sacramento
437 miData through Dec 2025Source: US DOT · BTS
Flights on BOI–SMF arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 855 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Southwest AirlinesOn-time85%Medianon timep9025 minCancel0.0%Flights824
- SkyWest AirlinesOn-time84%Medianon timep9030 minCancel0.0%Flights31
Why flights run late
Delay causes
- Airline35%
- Weather0%
- Air traffic (NAS)2%
- Late aircraft63%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BOI → SMF
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 98% on time.
- Mornings98% on time · p90 on time · 362 flights
- Middays88% on time · p90 15 min · 921 flights
- Evenings78% on time · p90 40 min · 863 flights
- Afternoons76% on time · p90 30 min · 269 flights
- Overnights69% on time · p90 45 min · 193 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 81% to 86% on time.
- Tuesdays86% on time · p90 15 min · 362 flights
- Saturdays85% on time · p90 25 min · 294 flights
- Sundays84% on time · p90 25 min · 407 flights
- Wednesdays83% on time · p90 20 min · 361 flights
- Thursdays83% on time · p90 25 min · 390 flights
- Fridays83% on time · p90 25 min · 396 flights
- Mondays81% on time · p90 30 min · 398 flights
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