Best time to fly Minneapolis to Raleigh/Durham

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

Best month

October

94% on time · 116 flights

Worst month

July

64.4% on time · 119 flights

Month Flights On time Cancelled When late, by
January 74 82.4% 8.11% 37 min
February 78 84.6% 0% 61 min
March 89 69% 2.25% 76 min
April 104 84.6% 0% 54 min
May 118 85.5% 0.85% 41 min
June 113 77.9% 0% 46 min
July 119 64.4% 0.84% 51 min
August 115 82.5% 0% 39 min
September 107 87.9% 0% 52 min
October 116 94% 0% 37 min
November 106 91.4% 0.94% 54 min
December 91 70.5% 3.3% 88 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.