Historical on-time performance
San Jose to Boise
Flights on SJC–BOI arrive on time 89% of the time over the last 12 months.
based on 438 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- Southwest AirlinesOn-time89%Medianon timep9015 minCancel0.0%Flights194
- SkyWest AirlinesOn-time89%Medianon timep9015 minCancel0.4%Flights244
Why flights run late
Delay causes
- Airline23%
- Weather3%
- Air traffic (NAS)13%
- Late aircraft61%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 1 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 SJC → BOI
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 92% on time.
- Mornings92% on time · p90 5 min · 260 flights
- Middays88% on time · p90 15 min · 709 flights
- Evenings85% on time · p90 30 min · 631 flights
- Afternoons73% on time · p90 40 min · 409 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 89% on time.
- Tuesdays89% on time · p90 15 min · 271 flights
- Sundays86% on time · p90 25 min · 318 flights
- Wednesdays86% on time · p90 15 min · 270 flights
- Mondays85% on time · p90 25 min · 314 flights
- Saturdays85% on time · p90 20 min · 200 flights
- Fridays81% on time · p90 30 min · 319 flights
- Thursdays80% on time · p90 30 min · 317 flights
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