Best time to fly Minneapolis to Milwaukee

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

Best month

September

90.7% on time · 259 flights

Worst month

January

72.8% on time · 180 flights

Month Flights On time Cancelled When late, by
January 180 72.8% 0% 91 min
February 167 81.4% 0% 89 min
March 228 79.1% 3.07% 61 min
April 253 83.3% 0.79% 87 min
May 281 88.5% 0% 90 min
June 312 78.6% 0.32% 80 min
July 288 73% 4.86% 75 min
August 267 79.3% 0% 59 min
September 259 90.7% 0% 48 min
October 263 90.5% 0% 55 min
November 226 90.6% 1.33% 57 min
December 240 75.2% 0.83% 73 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.