Best time to fly Charlotte to Knoxville

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

Best month

November

87.9% on time · 243 flights

Worst month

July

59.1% on time · 247 flights

Month Flights On time Cancelled When late, by
January 242 74.4% 7.85% 76 min
February 223 65.7% 3.14% 67 min
March 265 75% 1.89% 85 min
April 235 73.2% 0% 61 min
May 246 66.5% 1.63% 63 min
June 110 64.8% 1.82% 81 min
July 247 59.1% 2.02% 91 min
August 273 76.5% 1.83% 71 min
September 326 74.4% 0.61% 62 min
October 346 80.6% 0% 47 min
November 243 87.9% 0.82% 50 min
December 214 65% 0% 79 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.