Best time to fly Lafayette to Chicago

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full LAF to ORD 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 49 63.8% 4.08% 198 min
February 44 77.3% 0% 136 min
March 49 65.2% 4.08% 152 min
April 47 55.8% 6.38% 121 min
May 49 77.6% 0% 116 min
June 43 82.9% 4.65% 110 min
August 42 83.3% 0% 154 min
September 47 85.1% 0% 182 min
October 49 85.7% 0% 142 min
November 46 79.1% 6.52% 145 min
December 52 64% 3.85% 122 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.