Best time to fly Minneapolis to Grand Rapids

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

Best month

November

87.6% on time · 107 flights

Worst month

December

62.3% on time · 72 flights

Month Flights On time Cancelled When late, by
January 93 71% 0% 89 min
February 81 84% 0% 60 min
March 113 80.7% 3.54% 99 min
April 96 79.8% 1.04% 44 min
May 115 80.9% 0% 69 min
June 117 73% 0.85% 80 min
July 115 75.7% 0% 74 min
August 113 85% 0% 56 min
September 107 83.2% 0% 48 min
October 114 86% 0% 63 min
November 107 87.6% 1.87% 54 min
December 72 62.3% 4.17% 57 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.