Best time to fly Indianapolis to Austin

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

Best month

November

89% on time · 146 flights

Worst month

July

76.2% on time · 170 flights

Month Flights On time Cancelled When late, by
January 106 83% 0% 63 min
February 97 87.6% 0% 26 min
March 144 84.3% 1.39% 100 min
April 169 87% 0% 52 min
May 214 84.9% 0.47% 50 min
June 243 80.2% 0.41% 61 min
July 170 76.2% 0.59% 60 min
August 118 82.2% 0% 49 min
September 107 87.9% 0% 40 min
October 147 87% 0% 45 min
November 146 89% 0% 45 min
December 148 81.1% 0% 67 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.