Best time to fly Charlotte to Newark

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

Best month

May

86% on time · 273 flights

Worst month

July

58.8% on time · 323 flights

Month Flights On time Cancelled When late, by
January 340 84.5% 10.59% 70 min
February 318 76.8% 10.38% 76 min
March 359 74.1% 1.95% 80 min
April 305 76.2% 0.66% 52 min
May 273 86% 0.73% 86 min
June 271 78.9% 2.21% 112 min
July 323 58.8% 8.67% 137 min
August 306 67% 1.96% 92 min
September 279 82.9% 1.43% 82 min
October 324 72.7% 0.93% 58 min
November 339 71.2% 4.72% 89 min
December 318 67.3% 1.57% 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.