Best time to fly Florianópolis to São Paulo

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

Best month

May

82.1% on time · 552 flights

Worst month

December

61.8% on time · 292 flights

Month Flights On time Cancelled When late, by
January 582 72.9% 1.89% 49 min
February 465 77% 1.94% 58 min
March 518 79.6% 0.58% 40 min
April 526 69.6% 1.71% 39 min
May 552 82.1% 1.81% 36 min
June 340 81.3% 2.65% 43 min
July 555 77.6% 1.98% 44 min
October 25 70.8% 4% 47 min
November 291 76.6% 0.34% 34 min
December 292 61.8% 2.4% 53 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.