Best time to fly Provo to Dallas/Fort Worth

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

Best month

October

90.3% on time · 62 flights

Worst month

July

70.3% on time · 93 flights

Month Flights On time Cancelled When late, by
January 62 87.9% 6.45% 266 min
February 56 89.1% 0% 92 min
March 62 79.7% 3.23% 111 min
April 60 77.6% 3.33% 73 min
May 58 76.4% 3.45% 102 min
June 60 82.5% 1.67% 139 min
July 93 70.3% 1.08% 107 min
August 67 76.2% 1.49% 74 min
September 60 81.4% 1.67% 79 min
October 62 90.3% 0% 75 min
November 59 80.7% 1.69% 111 min
December 60 86.7% 0% 156 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.