Best time to fly Fortaleza to São Paulo

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

Best month

October

94.1% on time · 17 flights

Worst month

December

78.5% on time · 221 flights

Month Flights On time Cancelled When late, by
January 469 89% 1.07% 57 min
February 347 88.7% 0.86% 29 min
March 315 91.2% 2.86% 32 min
April 324 90.6% 1.23% 40 min
May 332 90.8% 1.81% 58 min
June 212 86.7% 0.47% 32 min
July 397 91% 2.52% 34 min
October 17 94.1% 0% 21 min
November 139 81.9% 0.72% 36 min
December 221 78.5% 5.43% 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.