Best time to fly Atlanta to Melbourne

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

Best month

November

90.2% on time · 117 flights

Worst month

July

73.1% on time · 122 flights

Month Flights On time Cancelled When late, by
January 123 84.2% 2.44% 45 min
February 112 86.6% 0% 32 min
March 124 81% 2.42% 51 min
April 120 89.1% 0.83% 73 min
May 124 85.2% 1.61% 46 min
June 120 87.4% 0.83% 54 min
July 122 73.1% 2.46% 78 min
August 122 82.8% 0% 90 min
September 120 86.7% 0% 39 min
October 123 86.1% 0% 77 min
November 117 90.2% 4.27% 41 min
December 121 78.3% 0.83% 70 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.