Best time to fly Miami to Indianapolis

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

Best month

October

85.5% on time · 56 flights

Worst month

August

55.7% on time · 62 flights

Month Flights On time Cancelled When late, by
January 123 77.8% 4.07% 69 min
February 86 70.9% 0% 52 min
March 88 67.1% 3.41% 68 min
April 83 83.1% 0% 36 min
May 84 69% 0% 45 min
June 62 67.2% 0% 80 min
July 62 62.3% 0% 61 min
August 62 55.7% 1.61% 99 min
September 53 73.6% 0% 71 min
October 56 85.5% 0% 52 min
November 84 81.9% 1.19% 123 min
December 88 75% 0% 48 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.