Best Time to Fly KOA to DEN: On-Time Stats by Hour & Airline
Ellison Onizuka Kona International at Keahole → Denver International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 91.2% of Kona (KOA) to Denver (DEN) flights arrived on time (370 scheduled flights). That is 13.6 points above the national average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
July has been the best month (98% on time) and Friday the weakest day of the week (88%).
1.4% of flights were cancelled, versus 1.8% nationally.
KOA to DEN 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 |
|---|---|---|---|---|
| United Airlines | 91.2% | 84 min | 1.4% | 370 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly KOA to DEN
On-time arrival % by scheduled departure hour (local time), 735 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7pm–8pm | 91.5% | 1.6% | 376 |
| 8pm–9pm | 91.4% | 0.8% | 354 |
| 9pm–10pm | Limited data | 5 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on KOA to DEN
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 | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 30 | ||
| Summer peak (Jun 15 - Aug 15) | 91.8% | +0.6 pts | 0.8% | 124 |
| All other days | 91.2% | — | 1.6% | 567 |
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).