Best time to fly Charlotte Amalie to Chicago

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full STT 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 67 56.7% 4.48% 113 min
February 63 79.4% 0% 101 min
March 94 68.2% 0% 48 min
April 44 68.2% 0% 52 min
May 10 80% 0% 17 min
June 8 87.5% 0% 27 min
July 8 100% 0%
August 6 66.7% 0% 864 min
October 2 50% 0% 31 min
November 23 73.9% 0% 44 min
December 56 78.6% 0% 48 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.