Best time to fly Nashville to Des Moines

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full BNA to DSM 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 20 72.2% 10% 102 min
February 16 87.5% 0% 178 min
March 20 94.7% 5% 29 min
April 16 75% 0% 123 min
May 30 76.7% 0% 64 min
June 45 79.5% 0% 77 min
July 43 81% 2.33% 33 min
August 37 81.1% 0% 109 min
September 35 91.4% 0% 207 min
October 35 97.1% 0% 38 min
November 27 92.3% 3.7% 594 min
December 22 54.5% 0% 139 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.