Best time to fly Sanford to Louisville

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full SFB to SDF 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 8 42.9% 12.5% 47 min
February 8 25% 0% 47 min
March 10 33.3% 10% 115 min
April 10 70% 0% 85 min
May 11 81.8% 0% 91 min
June 12 33.3% 0% 104 min
July 18 83.3% 0% 26 min
August 12 66.7% 0% 105 min
September 9 88.9% 0% 60 min
October 14 35.7% 0% 164 min
November 10 50% 0% 82 min
December 10 50% 0% 49 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.