Best time to fly Columbus to Las Vegas

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

Best month

January

92.7% on time · 58 flights

Worst month

December

71.9% on time · 64 flights

Month Flights On time Cancelled When late, by
January 58 92.7% 5.17% 79 min
February 59 79.7% 0% 70 min
March 82 80.5% 0% 71 min
April 85 78.8% 0% 64 min
May 87 77% 0% 71 min
June 67 77.6% 0% 37 min
July 78 75.6% 0% 47 min
August 67 81.5% 1.49% 37 min
September 84 81% 0% 44 min
October 110 75.5% 0% 48 min
November 70 84.1% 0% 39 min
December 64 71.9% 0% 83 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.