Best time to fly Kansas City to Atlanta

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

Best month

August

93.9% on time · 582 flights

Worst month

July

77.1% on time · 616 flights

Month Flights On time Cancelled When late, by
January 473 85.9% 5.29% 108 min
February 455 89.6% 0.44% 65 min
March 519 84.2% 2.31% 86 min
April 514 88.1% 1.56% 65 min
May 560 84% 0.54% 75 min
June 575 82.3% 1.04% 66 min
July 616 77.1% 3.08% 85 min
August 582 93.9% 0.52% 79 min
September 558 90.5% 0% 49 min
October 595 92.6% 0% 67 min
November 525 90.6% 0.95% 66 min
December 514 83.2% 1.17% 93 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.