Best time to fly Foz do Iguaçu to São Paulo

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

Best month

November

91.1% on time · 147 flights

Worst month

October

72.7% on time · 12 flights

Month Flights On time Cancelled When late, by
January 295 90.8% 1.02% 33 min
February 217 84.6% 1.38% 54 min
March 219 87.2% 0.46% 44 min
April 245 80.6% 1.22% 51 min
May 256 80.3% 0.78% 50 min
June 141 78.6% 0.71% 47 min
July 295 85% 0.68% 69 min
October 12 72.7% 8.33% 26 min
November 147 91.1% 0.68% 31 min
December 178 79.3% 5.06% 56 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.