KOA to DEN flight delays & on-time performance
Nonstop flights from Ellison Onizuka Kona International Airport at Keāhole to Denver International Airport · 3,329 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at KOA or DEN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Kona (KOA) to Denver (DEN) arrived on time 91% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.4% were cancelled, and 2% arrived an hour or more late.
- United Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8pm did best (94% on time); around 7pm did worst (88%).
- Tuesday was the most reliable day to fly (96% on time) and Thursday the least (88%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (66%).
Which airline is most on time from KOA to DEN?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 91% | 1.4% | 8 min | 2.2% | 370 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7pm88%137 flights
- 8pm94%228 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday92%0.0% cancelled
- Tuesday96%3.8% cancelled
- Wednesday92%0.0% cancelled
- Thursday88%1.9% cancelled
- Friday89%0.0% cancelled
- Saturday89%3.5% cancelled
- Sunday92%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)66%
- Late-arriving aircraft19%
- Air traffic control & airport congestion15%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)60%
- Extreme weather40%
- Air traffic control & airport congestion0%
- Security0%
KOA to DEN: common questions
- How often are KOA to DEN flights on time?
- 91% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Kona to Denver cancelled?
- 1.4% of scheduled flights were cancelled (5 of 370).
- How long are typical delays?
- Across all flights the average arrival delay was 8 min (early arrivals count as zero). Flights that were late arrived 84 min behind schedule on average, and 2.2% of flights were an hour or more late.
- How long is taxi time at KOA?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DEN to KOA — 84% on time
More flights from Kona
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: KOA → DEN, nonstop flights by US airlines that report to the DOT. How we calculate this.