Best time to fly Columbus to Phoenix

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

Best month

October

87.9% on time · 107 flights

Worst month

December

73.7% on time · 100 flights

Month Flights On time Cancelled When late, by
January 83 86.8% 8.43% 185 min
February 75 87.8% 0% 69 min
March 128 84.8% 2.34% 85 min
April 110 80% 0% 66 min
May 111 79.6% 1.8% 63 min
June 95 75.8% 0% 63 min
July 114 84.1% 0.88% 123 min
August 78 81.8% 0% 85 min
September 73 87.3% 1.37% 117 min
October 107 87.9% 0% 170 min
November 95 82.1% 0% 162 min
December 100 73.7% 1% 154 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.