Best time to fly Miami to Nashville

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

Best month

October

82.3% on time · 394 flights

Worst month

July

63.5% on time · 367 flights

Month Flights On time Cancelled When late, by
January 453 78.6% 5.08% 53 min
February 404 74.8% 0.5% 75 min
March 454 67.3% 2.64% 71 min
April 390 76% 0.26% 62 min
May 406 64.4% 0.25% 66 min
June 378 63.9% 0.53% 67 min
July 367 63.5% 0.27% 98 min
August 392 65.1% 1.28% 81 min
September 358 79.2% 0.28% 75 min
October 394 82.3% 1.27% 57 min
November 389 81.1% 0.51% 79 min
December 386 78.1% 0.26% 57 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.