Best time to fly Norfolk to Dallas/Fort Worth

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

Best month

January

82.8% on time · 66 flights

Worst month

July

61% on time · 109 flights

Month Flights On time Cancelled When late, by
January 66 82.8% 12.12% 45 min
February 64 75% 0% 117 min
March 83 74.4% 0% 136 min
April 85 75.9% 2.35% 90 min
May 89 74.4% 4.49% 84 min
June 90 63.9% 5.56% 153 min
July 109 61% 2.75% 149 min
August 85 65.4% 2.35% 76 min
September 77 71.1% 1.3% 91 min
October 83 77.8% 0% 87 min
November 87 77.8% 5.75% 95 min
December 80 68.8% 0% 155 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.