Best time to fly Cincinnati to Raleigh/Durham

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full CVG to RDU 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 26 84% 3.85% 185 min
February 28 66.7% 3.57% 115 min
March 7 83.3% 14.29% 18 min
July 67 75.8% 1.49% 72 min
August 72 73.9% 4.17% 89 min
September 60 85% 0% 37 min
October 62 88.7% 0% 76 min
November 33 84.8% 0% 81 min
December 18 88.9% 0% 46 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.