Best time to fly New York to Dallas/Fort Worth

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

Best month

February

85% on time · 110 flights

Worst month

December

68.3% on time · 174 flights

Month Flights On time Cancelled When late, by
January 128 82.9% 7.81% 102 min
February 110 85% 9.09% 68 min
March 121 80.3% 1.65% 57 min
April 143 80.7% 0% 62 min
May 182 74.3% 1.1% 82 min
June 180 72.9% 3.89% 86 min
July 217 70.2% 4.61% 132 min
August 217 76.8% 1.38% 67 min
September 186 81.3% 1.61% 113 min
October 179 74% 1.12% 79 min
November 177 77% 1.69% 66 min
December 174 68.3% 4.02% 99 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.