Best time to fly Kahului to Chicago

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

There is not yet enough of the year on record for this route to say anything about seasons. The months below are shown as recorded.

Month Flights On time Cancelled When late, by
January 23 91.3% 0% 76 min
February 24 100% 0%
March 31 83.3% 3.23% 236 min
April 13 76.9% 0% 282 min
May 5 80% 0% 94 min
June 4 100% 0%
July 4 100% 25%
August 5 50% 20% 213 min
September 4 100% 0%
October 4 100% 0%
November 5 80% 0% 225 min
December 16 87.5% 0% 77 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.