Best time to fly Columbus to New York

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

Best month

September

90.3% on time · 499 flights

Worst month

March

77% on time · 546 flights

Month Flights On time Cancelled When late, by
January 521 80.4% 3.84% 64 min
February 481 85% 5.61% 59 min
March 546 77% 5.31% 72 min
April 545 81.8% 0% 65 min
May 527 79.7% 1.9% 72 min
June 464 79.3% 5.39% 80 min
July 503 77.6% 7.95% 78 min
August 473 81% 4.65% 58 min
September 499 90.3% 0.6% 67 min
October 560 80.9% 1.79% 60 min
November 560 80.7% 0.18% 72 min
December 500 77% 2.4% 61 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.