Best time to fly Dayton to Atlanta

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

Best month

October

95.8% on time · 261 flights

Worst month

July

79.2% on time · 231 flights

Month Flights On time Cancelled When late, by
January 174 82.9% 5.75% 105 min
February 212 93.4% 0.47% 78 min
March 236 91.3% 2.54% 61 min
April 234 91.4% 0.85% 122 min
May 237 86.4% 0.42% 90 min
June 221 86.1% 2.26% 107 min
July 231 79.2% 4.33% 133 min
August 228 90.7% 0.44% 71 min
September 237 92.4% 0% 60 min
October 261 95.8% 0% 104 min
November 241 94.5% 2.07% 176 min
December 213 88.6% 0.94% 103 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.