Ellison Onizuka Kona International at Keahole (KOA) Delays and On-Time Departures
Kona, HI · ranked 27th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
86.6% of the 16,052 flights scheduled to depart Kona (KOA) in the last 12 months left on time, 9.2 points above the US average of 77.4%.
That ranks 27th of 333 US airports tracked on this site, with 1.1% of departures cancelled.
Among airlines at Kona (KOA), Southwest Airlines left on time most often (93.8%).
Over 24 months, Tuesday was the most reliable day (90% on time) and March the worst month (84%).
Best time of day to fly out of Kona (KOA)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 8 | |
| 6am–7am | 96.0% | 0.5% | 1,363 |
| 7am–8am | 96.4% | 0.5% | 856 |
| 8am–9am | 95.1% | 1.3% | 2,585 |
| 9am–10am | 94.5% | 0.7% | 1,516 |
| 10am–11am | 93.0% | 0.4% | 2,309 |
| 11am–12pm | 88.0% | 1.1% | 2,182 |
| 12pm–1pm | 82.6% | 0.7% | 1,977 |
| 1pm–2pm | 84.2% | 0.7% | 3,376 |
| 2pm–3pm | 81.3% | 0.7% | 2,321 |
| 3pm–4pm | 82.2% | 0.9% | 2,538 |
| 4pm–5pm | 87.6% | 1.3% | 1,579 |
| 5pm–6pm | 80.3% | 1.5% | 1,082 |
| 6pm–7pm | 84.8% | 0.8% | 1,067 |
| 7pm–8pm | 89.5% | 1.2% | 1,702 |
| 8pm–9pm | 90.4% | 1.2% | 1,691 |
| 9pm–10pm | 88.5% | 1.4% | 2,613 |
| 10pm–11pm | 91.5% | 1.5% | 995 |
| 11pm–12am | 89.7% | 0.8% | 390 |
Airlines at KOA ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Southwest Airlines | 93.8% | 94.5% | 0.7% | 2,888 |
| United Airlines | 90.7% | 89.3% | 1.1% | 1,801 |
| American Airlines | 90.5% | 88.2% | 1.2% | 856 |
| Hawaiian Airlines | 89.5% | 87.7% | 0.7% | 2,913 |
| Delta Air Lines | 86.4% | 88.3% | 2.9% | 826 |
| Alaska Airlines | 80.7% | 79.6% | 1.3% | 6,768 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of KOA
On-time departures by day, 24 months.
Best month to fly out of KOA
On-time departures by month, 24 months.
Holiday travel at Kona (KOA)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 88.3% | -0.4 pts | 0.3% | 602 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.8% | -6.9 pts | 0.5% | 1,445 |
| Summer peak (Jun 15 - Aug 15) | 87.2% | -1.5 pts | 0.6% | 5,601 |
| All other days | 88.7% | — | 1.1% | 24,502 |
Monthly on-time departure trend at KOA
On-time departure % each month, with the 12-month US average for reference.
Routes from Kona (KOA)
Every route from KOA with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| KOA → Honolulu (HNL) | 84.8% | 1.2% | 7,236 |
| KOA → Los Angeles (LAX) | 87.0% | 1.2% | 1,607 |
| KOA → Kahului (OGG) | 87.2% | 0.2% | 1,460 |
| KOA → Seattle (SEA) | 87.1% | 2.2% | 1,422 |
| KOA → San Francisco (SFO) | 84.0% | 1.0% | 1,150 |
| KOA → Sacramento (SMF) | 89.4% | 0.0% | 521 |
| KOA → Phoenix (PHX) | 94.2% | 1.0% | 384 |
| KOA → Denver (DEN) | 91.2% | 1.4% | 370 |
| KOA → Las Vegas (LAS) | 95.3% | 0.3% | 365 |
| KOA → Lihue (LIH) | 93.4% | 0.6% | 365 |
| KOA → Portland (PDX) | 80.8% | 0.0% | 365 |
| KOA → San Diego (SAN) | 74.6% | 0.6% | 364 |
| KOA → San Jose (SJC) | 75.0% | 0.0% | 154 |