San Francisco (SFO) to Kona (KOA): On-Time Performance
Data through July 2026
The calendar drives reliability on SFO–KOA. September 2024 flights landed on schedule 98% of the time, but July 2025 dropped to 77% — a gap of 21 points. Across the full period the route averages 87% on-time against a national 78%.
- On-time
- 87%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 0.3%
- Flights/day
- 3.2
- last 12 months
- Duration
- 5h 36m
- scheduled
- Distance
- 2,368 mi
Best airline from SFO to KOA
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlinesmost reliable | 90% | 6 min | 0.0% | 260 |
| United Airlines | 87% | 8 min | 0.4% | 1,674 |
Monthly on-time trend
Best time to fly from SFO to KOA
Aim for departures around 5 p.m. (92% on-time); avoid 6 p.m. departures (83%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 91% | 5 min |
| Tuesday | 89% | 6 min |
| Wednesday | 83% | 11 min |
| Thursday | 86% | 9 min |
| Friday | 84% | 11 min |
| Saturday | 89% | 9 min |
| Sunday | 87% | 6 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations46%
- National airspace system14%
Frequently asked questions
- How often are flights from SFO to KOA delayed?
- 13% of SFO–KOA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 8 minutes.
- Which airline is most reliable from SFO to KOA?
- Alaska Airlines has the best on-time record on this route at 90%, based on 260 flights. 2 airlines flew SFO–KOA frequently enough to compare in this period.
- What is the best time of day to fly from SFO to KOA?
- Departures around 5 p.m. have the best record (92% on-time), while departures around 6 p.m. have the worst (83%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SFO to KOA?
- The scheduled SFO–KOA flight time averages 5h 36m over 2,368 miles. Actual arrival times vary — flights on this route land 15+ minutes late 13% of the time.
- How often are SFO to KOA flights cancelled?
- 0.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SFO to KOA?
- July 2025 was the roughest month in this dataset, with only 77% of arrivals on time. The best was September 2024 at 98%. If your dates are flexible, that 21-point gap is worth planning around.
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Based on 1,934 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.