Best Time to Fly SFO to KOA: On-Time Stats by Hour & Airline
San Francisco International → Ellison Onizuka Kona International at Keahole
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 86.7% of San Francisco (SFO) to Kona (KOA) flights arrived on time (1,151 scheduled flights). That is 9.1 points above the national average of 77.6%.
Alaska Airlines was the most punctual of the 2 airlines on the route at 91.3%, while United Airlines trailed at 85.6%.
May has been the best month (91% on time) and Wednesday the weakest day of the week (83%).
0.3% of flights were cancelled, versus 1.8% nationally.
SFO 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 | 91.3% | 64 min | 0.0% | 231 |
| United Airlines | 85.6% | 49 min | 0.3% | 920 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SFO to KOA
On-time arrival % by scheduled departure hour (local time), 1,868 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 91.0% | 0.0% | 279 |
| 8am–9am | 87.3% | 0.0% | 151 |
| 9am–10am | 86.8% | 0.3% | 580 |
| 10am–11am | 88.4% | 0.0% | 146 |
| 11am–12pm | 86.8% | 1.1% | 92 |
| 4pm–5pm | 84.2% | 0.2% | 431 |
| 5pm–6pm | 91.5% | 0.0% | 59 |
| 6pm–7pm | 82.8% | 0.0% | 58 |
| 7pm–8pm | 90.3% | 0.0% | 72 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SFO 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) | 88.2% | +0.1 pts | 0.0% | 34 |
| Christmas & New Year (Dec 20 - Jan 3) | 83.3% | -4.8 pts | 0.0% | 114 |
| Summer peak (Jun 15 - Aug 15) | 85.2% | -2.9 pts | 0.0% | 434 |
| All other days | 88.1% | — | 0.3% | 1,286 |
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).