Historical on-time performance
Kona to San Francisco
2,367 miData through May 2026Source: US DOT · BTS
Flights on KOA–SFO arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 805 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time85%Medianon timep9020 minCancel1.1%Flights805
Why flights run late
Delay causes
- Airline47%
- Weather0%
- Air traffic (NAS)20%
- Late aircraft33%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline56%
- Weather33%
- Air traffic (NAS)11%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 9 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 KOA → SFO
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Overnights are the most reliable time of day to fly this route — 94% on time.
- Overnights94% on time · p90 on time · 932 flights
- Afternoons80% on time · p90 30 min · 731 flights
- Middays75% on time · p90 40 min · 774 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 82% to 88% on time.
- Wednesdays88% on time · p90 15 min · 301 flights
- Mondays87% on time · p90 20 min · 323 flights
- Tuesdays86% on time · p90 25 min · 339 flights
- Sundays84% on time · p90 25 min · 372 flights
- Fridays83% on time · p90 25 min · 329 flights
- Thursdays82% on time · p90 35 min · 361 flights
- Saturdays82% on time · p90 25 min · 465 flights
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