Best time to fly Newark to Madison

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

Best month

March

86.2% on time · 62 flights

Worst month

November

50% on time · 60 flights

Month Flights On time Cancelled When late, by
January 62 76.3% 4.84% 45 min
February 56 77.4% 5.36% 75 min
March 62 86.2% 4.84% 77 min
April 60 84.6% 11.67% 45 min
May 65 84.2% 12.31% 67 min
June 90 78.8% 5.56% 113 min
July 62 54.9% 17.74% 126 min
August 62 70.4% 12.9% 78 min
September 60 79.7% 1.67% 91 min
October 62 74.2% 0% 78 min
November 60 50% 0% 69 min
December 60 61% 1.67% 67 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.