Best time to fly New York to Cincinnati

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

Best month

August

96.8% on time · 63 flights

Worst month

December

66.1% on time · 63 flights

Month Flights On time Cancelled When late, by
January 61 81.5% 11.48% 42 min
February 56 80% 10.71% 76 min
March 62 73.8% 1.61% 128 min
April 35 91.4% 0% 74 min
May 40 92.5% 0% 35 min
June 60 84.7% 1.67% 34 min
July 66 70.3% 1.52% 52 min
August 63 96.8% 0% 78 min
September 60 93.2% 1.67% 59 min
October 62 86.7% 3.23% 25 min
November 58 76.8% 3.45% 56 min
December 63 66.1% 1.59% 59 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.