ON TIMEBOARD

DEN → KOA on time

Denver (Denver, CO) to Ellison Onizuka Kona at Keāhole (Kona, HI). Every scheduled flight, September 2025 to August 2026.

On time
84%
arrived < 15 min late
Cancelled
1.1%
370 flights
Typical arrival
−10 min
median vs schedule
When late
+76 min
average delay
Flights / day
1
1 airline

84% of flights from Denver to Kona arrived on time over the past 12 months. That is better than the typical U.S. route. 7% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for DEN → KOA: when a flight was late, it was under 45 minutes late 53% of the time. About 1 in 18 flights landed an hour or more late, and 1 in 123 three hours or more; 1.1% were cancelled outright.

Share of all 370 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
United Airlines37084%1.1%−10 min5.7%+76 minUnited Airlines

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

By month

Each calendar month pooled over 2023–2026.

40%70%100%Jan: too few flights (93 flights)JanFeb: too few flights (86 flights)FebMar: too few flights (97 flights)MarApr: too few flights (90 flights)AprMay: too few flights (93 flights)MayJun: too few flights (90 flights)JunJul: too few flights (93 flights)JulAug: too few flights (93 flights)AugSep: too few flights (90 flights)SepOct: too few flights (93 flights)OctNov: too few flights (90 flights)NovDec: too few flights (93 flights)Dec

By day of week

DayFlightsOn timeCancelled
Monday53——
Tuesday52——
Wednesday52——
Thursday52——
Friday52——
Saturday57——
Sunday52——

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Airline (crew, maintenance, ops) 44%Late inbound plane 33%Air traffic & airport (NAS) 19%Severe weather 4%

Cancellations: weather 3 · airline 1

Month by month

Not enough months with data to draw a trend.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
UA 175812:15 p.m.36585%0.8%−10 minUnited Airlines

Questions

How often are flights from DEN to KOA on time?

84% of 370 scheduled flights from Denver, CO to Kona, HI arrived within 15 minutes of schedule between September 2025 and August 2026. 1.1% were cancelled.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.