Best time to fly Williamtown to Melbourne

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

Best month

February

81.4% on time · 140 flights

Worst month

January

73.5% on time · 135 flights

Month Flights On time Cancelled When late, by
January 135 73.5% 2.22% 0 min
February 140 81.4% 0% 0 min
March 156 80.9% 2.56% 0 min
April 153 80.3% 0.65% 0 min
May 155 80.1% 5.81% 0 min
June 291 80% 0.34% 0 min
July 156 78.7% 0.64% 0 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.