How reliable is Ellison Onizuka Kona International At Keahole Airport?
Flights from KOA departed within 15 minutes of schedule in 87% of 93,941 flights in official BTS history — and weather is calmest in Jul. Here’s the full picture before you book.
Reliability score
on-time, cancellations & delays
Weather favorability
year-round climate
Origin-airport operations
What the departure punctuality at KOA looks like
On-time departures
across 93,941 flights
Source: BTS Airport Operations · data through 2026-06-25. Role-specific BTS departure history; advisory context, not a guarantee for any flight.
Advertisement
Weather by month
When the weather works for you at Kona
A calm-weather score (0–100) for each month from decades of airport observations — how often conditions disrupt flying, not temperature. Higher is calmer.
Calmest month
Calmest flying weather of the year · 100/100 favorability
Roughest month
Most disruptive — low visibility & fog, high winds · 97/100 favorability
The read on KOA
What the numbers say about flying through Ellison Onizuka Kona International At Keahole Airport
Across official performance history, flights from Kona left within 15 minutes of schedule about 87% of the time over 93,941 flights. That's one of the more dependable operational records you'll see. Pair it with a low cancellation rate of 1.1%, so flights here rarely vanish outright. When a departure does run late, the typical delay is around 6 minutes.
On weather, Kona is an unusually calm-weather airport year-round. July is the calmest stretch for flying, scoring 100 out of 100 for favorable conditions, while March is the most disruptive at 97, driven mainly by low visibility & fog and high winds. The year is relatively steady, so no single month stands out as one to avoid on weather alone.
None of this guarantees your specific flight — it’s the backdrop. To turn it into a booking, score real flights to Kona, read how we weigh it all in how the PlaneSane Score works, and brush up with how to pick a reliable flight and avoiding weather delays.
Common questions about KOA
- How reliable is Ellison Onizuka Kona International At Keahole Airport (KOA)?
- Flights from Kona left within 15 minutes of schedule roughly 87% of the time across 93,941 flights of official history — one of the more dependable operational records you'll see. The cancellation rate runs about 1.1%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from KOA for good weather?
- July has the calmest flying weather at Ellison Onizuka Kona International At Keahole Airport. March is the most disruptive, mainly from low visibility & fog and high winds.
Planning a trip through Kona?
Score real flights to and from KOA on reliability, weather, and connection safety — not just price.