Best time to fly Uberlândia to São Paulo

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

Best month

May

92.4% on time · 186 flights

Worst month

December

70.1% on time · 80 flights

Month Flights On time Cancelled When late, by
January 159 80.4% 0.63% 44 min
February 143 82.5% 0% 41 min
March 163 90.2% 0% 37 min
April 187 86.2% 3.21% 79 min
May 186 92.4% 0.54% 29 min
June 101 90% 0.99% 41 min
July 169 86.8% 1.18% 44 min
October 7 85.7% 0% 20 min
November 71 88.7% 0% 54 min
December 80 70.1% 3.75% 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.