Best time to fly Charlotte to Charlotte Amalie

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

Best month

September

93.3% on time · 15 flights

Worst month

April

72.6% on time · 120 flights

Month Flights On time Cancelled When late, by
January 116 75.7% 6.03% 67 min
February 108 80% 1.85% 75 min
March 124 81.5% 0% 61 min
April 120 72.6% 0% 61 min
May 126 84.1% 0% 67 min
June 124 83.9% 0% 88 min
July 122 80.2% 0% 60 min
August 92 80.7% 3.26% 75 min
September 15 93.3% 0% 16 min
October 53 84.9% 0% 84 min
November 100 90.8% 0% 34 min
December 112 82.1% 0% 52 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.