Best time to fly Charlotte to Appleton

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

Best month

September

88.3% on time · 60 flights

Worst month

April

70.1% on time · 68 flights

Month Flights On time Cancelled When late, by
January 62 84.5% 6.45% 28 min
February 56 80% 1.79% 57 min
March 86 72.2% 6.98% 124 min
April 68 70.1% 0% 50 min
May 62 75.4% 1.61% 89 min
June 60 83.1% 1.67% 56 min
July 64 73.4% 0% 63 min
August 61 82% 0% 40 min
September 60 88.3% 0% 57 min
October 62 80.6% 0% 49 min
November 59 86.2% 1.69% 47 min
December 62 81.7% 3.23% 48 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.