Best time to fly Austin to Miami

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

Best month

February

85.6% on time · 182 flights

Worst month

August

65.2% on time · 157 flights

Month Flights On time Cancelled When late, by
January 175 81.1% 5.71% 106 min
February 182 85.6% 0.55% 43 min
March 217 73.4% 1.38% 71 min
April 210 84.6% 0.95% 57 min
May 214 81.3% 0% 64 min
June 200 78.3% 1% 76 min
July 178 69.4% 2.25% 85 min
August 157 65.2% 1.27% 87 min
September 124 82% 0.81% 81 min
October 152 80.9% 0% 39 min
November 165 78.4% 1.21% 78 min
December 187 81.3% 0% 70 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.