Best time to fly São Paulo to Doha

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

Best month

April

95.3% on time · 111 flights

Worst month

December

44.3% on time · 80 flights

Month Flights On time Cancelled When late, by
January 141 72.3% 0% 158 min
February 133 75.6% 1.5% 57 min
March 155 73.6% 53.55% 209 min
April 111 95.3% 23.42% 385 min
May 141 90.8% 15.6% 82 min
June 67 83.3% 1.49% 64 min
July 198 68.7% 16.16% 45 min
November 80 58.2% 1.25% 47 min
December 80 44.3% 1.25% 123 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.