Best time to fly Detroit to Minneapolis

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

Best month

May

89.7% on time · 156 flights

Worst month

December

65.4% on time · 155 flights

Month Flights On time Cancelled When late, by
January 156 70.8% 1.28% 73 min
February 141 82.9% 0.71% 73 min
March 155 75.8% 3.87% 73 min
April 150 86.7% 0% 38 min
May 156 89.7% 0% 36 min
June 174 83.9% 0% 63 min
July 195 76.2% 0% 74 min
August 189 69.3% 0% 94 min
September 152 77.6% 0% 59 min
October 154 87.7% 0% 80 min
November 150 81.2% 0.67% 45 min
December 155 65.4% 1.29% 72 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.