Best time to fly Pittsburgh to New York

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

Best month

August

93.4% on time · 155 flights

Worst month

December

73.9% on time · 137 flights

Month Flights On time Cancelled When late, by
January 117 85.7% 10.26% 79 min
February 115 81.6% 10.43% 84 min
March 128 89.5% 3.13% 83 min
April 121 90.1% 0% 96 min
May 149 89.7% 2.01% 38 min
June 150 85.2% 0.67% 74 min
July 155 88.2% 6.45% 92 min
August 155 93.4% 1.94% 44 min
September 178 85.8% 0.56% 74 min
October 183 87.7% 2.19% 72 min
November 176 90.5% 4.55% 105 min
December 137 73.9% 2.19% 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.