Best time to fly São Paulo to Aracaju

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

Best month

July

80.3% on time · 143 flights

Worst month

December

55.3% on time · 173 flights

Month Flights On time Cancelled When late, by
January 161 69.8% 1.24% 35 min
February 135 60.2% 1.48% 44 min
March 160 70.4% 0.63% 37 min
April 281 71.4% 0.36% 45 min
May 290 78.5% 0.34% 35 min
June 177 72.6% 1.13% 33 min
July 143 80.3% 0.7% 35 min
October 16 68.8% 0% 54 min
November 149 71.1% 0% 32 min
December 173 55.3% 1.73% 41 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.