Best time to fly Cairns to Brisbane

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

Best month

May

85.5% on time · 460 flights

Worst month

January

62.8% on time · 400 flights

Month Flights On time Cancelled When late, by
January 400 62.8% 0.5% 0 min
February 346 74.3% 0.87% 0 min
March 390 81% 9.74% 0 min
April 474 82.3% 0.84% 0 min
May 460 85.5% 1.09% 0 min
June 855 83.9% 0.23% 0 min
July 429 85.1% 0% 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.