Best time to fly New York to Memphis

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

Best month

April

86.5% on time · 91 flights

Worst month

December

63.8% on time · 74 flights

Month Flights On time Cancelled When late, by
January 54 77.1% 11.11% 70 min
February 49 81.8% 10.2% 66 min
March 78 64.8% 7.69% 68 min
April 91 86.5% 1.1% 75 min
May 136 77.4% 1.47% 63 min
June 120 74.3% 5.83% 73 min
July 89 74.7% 15.73% 91 min
August 87 84.7% 2.3% 57 min
September 86 83.7% 0% 98 min
October 90 65.9% 2.22% 73 min
November 82 76.9% 4.88% 75 min
December 74 63.8% 6.76% 54 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.