Best time to fly New York to Aguadilla

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

Best month

October

82.5% on time · 65 flights

Worst month

December

52.4% on time · 107 flights

Month Flights On time Cancelled When late, by
January 98 61.7% 3.06% 58 min
February 102 63.5% 5.88% 74 min
March 103 72.5% 0% 42 min
April 86 65.9% 0% 55 min
May 86 73.3% 0% 51 min
June 88 73.3% 1.14% 65 min
July 124 62.5% 3.23% 58 min
August 124 58.7% 2.42% 62 min
September 65 80% 0% 51 min
October 65 82.5% 0% 63 min
November 90 67.4% 1.11% 48 min
December 107 52.4% 3.74% 57 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.