Best Time to Fly SJC to KOA: On-Time Stats by Hour & Airline
Norman Y. Mineta San Jose International → Ellison Onizuka Kona International at Keahole
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 92.9% of San Jose (SJC) to Kona (KOA) flights arrived on time (154 scheduled flights). That is 15.2 points above the national average of 77.6%.
Alaska Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Sunday was the most reliable day (94% on time) and August the worst month (84%).
The cancellation rate was 0.0% (US average 1.8%).
SJC to KOA on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlines | 92.9% | 27 min | 0.0% | 154 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SJC to KOA
On-time arrival % by scheduled departure hour (local time), 398 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 93.2% | 0.3% | 323 |
| 9am–10am | Limited data | 5 | |
| 10am–11am | 82.0% | 0.0% | 50 |
| 2pm–3pm | Limited data | 20 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SJC to KOA
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 9 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 21 | ||
| Summer peak (Jun 15 - Aug 15) | 86.8% | -5.5 pts | 1.4% | 69 |
| All other days | 92.3% | — | 0.0% | 299 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).