Best time to fly Raleigh/Durham to Indianapolis

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

There is not yet enough of the year on record for this route to say anything about seasons. The months below are shown as recorded.

Month Flights On time Cancelled When late, by
January 4 75% 0% 18 min
May 3 100% 0%
June 9 42.9% 22.22% 45 min
July 22 78.9% 13.64% 44 min
August 18 83.3% 0% 117 min
September 10 100% 10%
October 21 90.5% 0% 40 min
November 19 83.3% 5.26% 52 min
December 10 90% 0% 22 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.