Best time to fly New Orleans to Atlanta

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

Best month

September

89.6% on time · 632 flights

Worst month

July

73.9% on time · 713 flights

Month Flights On time Cancelled When late, by
January 667 88.3% 9% 73 min
February 702 79.8% 0.71% 48 min
March 767 79% 1.43% 67 min
April 705 84.5% 0.85% 80 min
May 731 77.3% 0.41% 58 min
June 649 75.6% 1.54% 66 min
July 713 73.9% 3.93% 78 min
August 679 84.6% 0.74% 69 min
September 632 89.6% 1.27% 72 min
October 807 85.8% 0.12% 52 min
November 782 83.2% 1.15% 71 min
December 743 80.2% 1.35% 60 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.