Best time to fly Kansas City to New York

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

Best month

September

88.5% on time · 287 flights

Worst month

June

72.4% on time · 313 flights

Month Flights On time Cancelled When late, by
January 280 84.3% 6.43% 144 min
February 253 84.9% 5.53% 112 min
March 309 74.7% 7.77% 69 min
April 303 81.5% 1.65% 55 min
May 311 78.7% 1.61% 91 min
June 313 72.4% 1.28% 73 min
July 321 78.5% 7.48% 114 min
August 311 82.2% 4.5% 77 min
September 287 88.5% 0% 66 min
October 290 83.6% 1.38% 64 min
November 279 79.5% 1.43% 86 min
December 285 73.5% 3.51% 107 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.