Best time to fly Dallas/Fort Worth to Milwaukee

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

Best month

September

80% on time · 222 flights

Worst month

July

50.8% on time · 190 flights

Month Flights On time Cancelled When late, by
January 209 69.8% 8.13% 80 min
February 176 70.9% 0% 69 min
March 186 66.7% 3.23% 75 min
April 177 71.2% 2.82% 64 min
May 183 65.3% 3.83% 91 min
June 180 52.3% 3.89% 97 min
July 190 50.8% 2.63% 86 min
August 224 64.1% 2.68% 94 min
September 222 80% 0.9% 87 min
October 224 79.7% 0.89% 93 min
November 197 66.5% 3.05% 87 min
December 209 62.3% 1.91% 81 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.