Best time to fly Raleigh/Durham to Dallas/Fort Worth

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

Best month

February

86.6% on time · 146 flights

Worst month

August

65.7% on time · 190 flights

Month Flights On time Cancelled When late, by
January 180 82.4% 11.11% 140 min
February 146 86.6% 2.05% 230 min
March 163 76.9% 1.23% 70 min
April 188 80.6% 1.06% 73 min
May 202 79.9% 2.97% 40 min
June 199 71% 4.52% 91 min
July 206 66.7% 3.4% 66 min
August 190 65.7% 4.21% 83 min
September 179 81.5% 2.79% 112 min
October 214 79.1% 0.93% 63 min
November 202 84.3% 1.49% 82 min
December 209 79.3% 0% 77 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.