Historical on-time performance
Boise to San Francisco
Flights on BOI–SFO arrive on time 74% of the time over the last 12 months.
based on 1,659 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.
- United AirlinesOn-time79%Medianon timep9040 minCancel0.9%Flights217
- SkyWest AirlinesOn-time73%Medianon timep9060 minCancel0.4%Flights1,442
Why flights run late
Delay causes
- Airline32%
- Weather2%
- Air traffic (NAS)44%
- Late aircraft21%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline13%
- Weather38%
- Air traffic (NAS)50%
- Security0%
Most cancellations here are attributed to Air traffic (NAS). Shares are among 8 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 BOI → SFO
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Afternoons are the most reliable time of day to fly this route — 83% on time.
- Afternoons83% on time · p90 30 min · 577 flights
- Evenings76% on time · p90 60 min · 1,157 flights
- Mornings76% on time · p90 45 min · 2,074 flights
- Middays74% on time · p90 55 min · 948 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 83% on time.
- Saturdays83% on time · p90 30 min · 665 flights
- Tuesdays80% on time · p90 35 min · 669 flights
- Sundays76% on time · p90 45 min · 672 flights
- Fridays75% on time · p90 50 min · 695 flights
- Wednesdays74% on time · p90 50 min · 677 flights
- Mondays74% on time · p90 45 min · 693 flights
- Thursdays73% on time · p90 60 min · 687 flights
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