Best time to fly Kona to Honolulu

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full KOA to HNL record →

Best month

September

94.8% on time · 1,231 flights

Worst month

March

81.1% on time · 1,321 flights

Month Flights On time Cancelled When late, by
January 1,327 85.3% 1.66% 57 min
February 1,185 85.8% 0.34% 39 min
March 1,321 81.1% 3.63% 67 min
April 1,205 84.1% 1.08% 39 min
May 1,285 88.5% 0.93% 42 min
June 1,211 87.2% 0.58% 36 min
July 1,323 88% 0.6% 36 min
August 1,311 92.9% 0.53% 41 min
September 1,231 94.8% 0.41% 42 min
October 1,262 90.7% 1.11% 49 min
November 1,234 91% 1.46% 41 min
December 1,281 84.1% 0.31% 40 min

What a seasonal pattern can and cannot tell you

Months differ for reasons that repeat — summer thunderstorms in the American interior, winter fog and de-icing in northern Europe, school holidays filling every seat and leaving no slack in the schedule. Those are real and they come back each year.

What the pattern cannot do is forecast a particular flight. A quiet month has late days and a bad month has punctual ones. Treat this as a way to choose between two dates you are indifferent about, not as a promise.