Best time to fly New Orleans to New York

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

Best month

September

90.2% on time · 82 flights

Worst month

July

65.9% on time · 92 flights

Month Flights On time Cancelled When late, by
January 84 75.3% 8.33% 68 min
February 99 78.7% 10.1% 168 min
March 93 78% 1.08% 68 min
April 89 77.3% 1.12% 38 min
May 92 81.8% 4.35% 46 min
June 89 71.4% 4.49% 69 min
July 92 65.9% 9.78% 78 min
August 93 82.2% 3.23% 160 min
September 82 90.2% 0% 93 min
October 116 83.2% 1.72% 63 min
November 108 82.7% 3.7% 55 min
December 105 74.7% 8.57% 87 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.