Best time to fly Indianapolis to Newark

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

Best month

May

92.7% on time · 181 flights

Worst month

July

73.1% on time · 180 flights

Month Flights On time Cancelled When late, by
January 184 89.5% 6.52% 91 min
February 151 88.4% 8.61% 36 min
March 181 80.6% 4.97% 60 min
April 176 86.9% 0.57% 48 min
May 181 92.7% 1.1% 42 min
June 176 85.5% 2.27% 100 min
July 180 73.1% 10.56% 80 min
August 195 79.2% 1.03% 80 min
September 199 89.8% 1.51% 104 min
October 187 87% 1.6% 76 min
November 205 85.2% 4.39% 88 min
December 208 73.2% 4.81% 80 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.