Kailua-Kona (KOA) to Denver (DEN) flights
United Airlines flies nonstop from Ellison Onizuka Kona International Airport at Keāhole to Denver International Airport, with about 7 flights a week in July 2026. The 3,329-mile flight takes about 6h 31m gate to gate.
- Distance
- 3,329 mi · 5,358 km
- Flight time
- 6h 31m
- Airlines
- 1
- Seats filled
- 79%
Airlines flying KOA to DEN
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 7 | Boeing 777-200ER/200LR/233LR, Boeing 757-200, Boeing 757-300 | 81,931 | 6h 31m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
KOA to DEN flight schedule
1 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 8:00pm and the last at 8:00pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| UA 1759United Airlines | 8:00pm | 6:48am | 31 | 92% |
Is KOA to DEN on time?
From September 2025 to August 2026, 92% of 370 flights arrived within 15 minutes of schedule and 2.2% were cancelled. Flights leaving around 8pm were the most punctual (94%), those around 7pm the least (89%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (68%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 370 | 92% | 8 min | 2.2% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 31 | 8,590 | |
| September 2025 | 30 | 4,665 | |
| October 2025 | 29 | 5,433 | |
| November 2025 | 30 | 7,168 | |
| December 2025 | 31 | 7,567 | |
| January 2026 | 31 | 8,479 | |
| February 2026 | 29 | 7,253 | |
| March 2026 | 31 | 8,565 | |
| April 2026 | 30 | 9,206 | |
| May 2026 | 31 | 4,987 | |
| June 2026 | 30 | 4,879 | |
| July 2026 | 31 | 5,139 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.