Best time to fly Cincinnati to New York

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

Best month

September

92.1% on time · 240 flights

Worst month

December

75.4% on time · 192 flights

Month Flights On time Cancelled When late, by
January 120 82.7% 8.33% 39 min
February 110 79.6% 6.36% 75 min
March 124 90.2% 1.61% 97 min
April 95 87.2% 0% 89 min
May 102 82.4% 0% 91 min
June 123 79.3% 1.63% 88 min
July 252 81.3% 4.37% 79 min
August 249 86.3% 8.43% 107 min
September 240 92.1% 0.42% 46 min
October 247 91.5% 0.4% 55 min
November 206 87.1% 1.46% 55 min
December 192 75.4% 2.6% 73 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.