Best time to fly Columbus to New York

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

Best month

May

94.6% on time · 112 flights

Worst month

December

69% on time · 133 flights

Month Flights On time Cancelled When late, by
January 119 80.6% 9.24% 40 min
February 112 81.4% 8.93% 56 min
March 148 80.4% 2.03% 71 min
April 130 90% 0% 76 min
May 112 94.6% 0.89% 32 min
June 114 83% 7.02% 95 min
July 154 75.4% 6.49% 76 min
August 155 81.7% 1.29% 52 min
September 150 91.3% 0.67% 73 min
October 155 88.9% 1.29% 101 min
November 149 86% 4.03% 68 min
December 133 69% 2.26% 67 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.