Best time to fly New York to Syracuse

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

Best month

October

93.7% on time · 192 flights

Worst month

June

49.2% on time · 60 flights

Month Flights On time Cancelled When late, by
January 129 70.2% 5.43% 49 min
February 117 65.8% 5.13% 66 min
March 135 73.1% 0.74% 66 min
April 91 81.3% 0% 64 min
May 73 76.4% 1.37% 78 min
June 60 49.2% 1.67% 63 min
July 155 68.8% 8.39% 88 min
August 155 63.8% 10.97% 67 min
September 177 86.3% 0.56% 42 min
October 192 93.7% 1.56% 51 min
November 189 83.4% 1.06% 42 min
December 195 70.7% 2.05% 75 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.