Best time to fly Charleston to Dallas/Fort Worth

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

Best month

December

89% on time · 110 flights

Worst month

June

73.5% on time · 124 flights

Month Flights On time Cancelled When late, by
January 99 84.3% 10.1% 141 min
February 75 86.3% 1.33% 36 min
March 106 82.9% 0.94% 59 min
April 114 80.5% 0.88% 102 min
May 122 74.6% 2.46% 139 min
June 124 73.5% 5.65% 101 min
July 148 75.7% 2.03% 90 min
August 85 79.8% 1.18% 84 min
September 68 79.1% 1.47% 95 min
October 91 77.8% 0% 127 min
November 108 86.5% 2.78% 79 min
December 110 89% 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.