Best time to fly Detroit to Charlotte

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

Best month

October

91% on time · 321 flights

Worst month

December

71.8% on time · 291 flights

Month Flights On time Cancelled When late, by
January 294 76.9% 9.86% 69 min
February 261 83.9% 2.68% 109 min
March 296 85.1% 2.03% 96 min
April 293 89.3% 0.68% 78 min
May 296 87.7% 0.68% 124 min
June 269 83.4% 1.49% 64 min
July 314 79.9% 1.59% 84 min
August 313 85.9% 0% 62 min
September 283 88.7% 0% 129 min
October 321 91% 0% 63 min
November 306 80.7% 0.33% 78 min
December 291 71.8% 1.37% 97 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.