Best time to fly New York to Norfolk

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

Best month

November

94.1% on time · 209 flights

Worst month

July

74.3% on time · 214 flights

Month Flights On time Cancelled When late, by
January 138 91.3% 8.7% 68 min
February 107 82.7% 8.41% 69 min
March 118 83.5% 2.54% 73 min
April 122 92.6% 0% 62 min
May 93 83.5% 2.15% 54 min
June 110 75.5% 6.36% 83 min
July 214 74.3% 9.81% 71 min
August 218 80.5% 8.26% 69 min
September 214 88.7% 0.47% 50 min
October 220 90% 0% 33 min
November 209 94.1% 2.39% 49 min
December 196 77.1% 1.53% 85 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.