Best time to fly Minneapolis to Green Bay

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

Best month

October

91.3% on time · 172 flights

Worst month

December

58.7% on time · 125 flights

Month Flights On time Cancelled When late, by
January 117 75.7% 0.85% 92 min
February 142 80.3% 0% 60 min
March 171 74.2% 4.68% 99 min
April 171 88.1% 1.75% 64 min
May 184 87.4% 0.54% 93 min
June 157 80.9% 0% 48 min
July 121 74.4% 0% 69 min
August 136 73.5% 0% 83 min
September 120 84.2% 0% 91 min
October 172 91.3% 0% 74 min
November 149 86.4% 1.34% 70 min
December 125 58.7% 3.2% 150 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.