Best time to fly Porto Seguro to São Paulo

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

Best month

May

86.3% on time · 318 flights

Worst month

October

68.8% on time · 16 flights

Month Flights On time Cancelled When late, by
January 185 80.3% 1.08% 44 min
February 151 79.1% 1.99% 58 min
March 154 85% 0.65% 35 min
April 310 73.6% 2.26% 44 min
May 318 86.3% 1.57% 54 min
June 197 83% 4.57% 47 min
July 284 83.8% 0% 48 min
October 16 68.8% 0% 92 min
November 148 80.4% 3.38% 70 min
December 171 72% 5.85% 40 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.