Best time to fly New York to Knoxville

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

Best month

March

93.4% on time · 78 flights

Worst month

May

64.4% on time · 76 flights

Month Flights On time Cancelled When late, by
January 78 81.1% 5.13% 55 min
February 72 76.5% 5.56% 63 min
March 78 93.4% 2.56% 53 min
April 82 82.9% 0% 42 min
May 76 64.4% 3.95% 48 min
June 76 76.1% 11.84% 92 min
July 185 77.2% 9.73% 76 min
August 182 79.4% 6.04% 64 min
September 141 92.2% 0% 29 min
October 146 89.7% 0.68% 77 min
November 151 91.4% 0% 47 min
December 146 76.6% 0.68% 49 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.