Best time to fly Memphis to Denver

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

Best month

October

87.2% on time · 211 flights

Worst month

June

61.9% on time · 227 flights

Month Flights On time Cancelled When late, by
January 208 80.8% 4.81% 59 min
February 189 85.6% 0.53% 117 min
March 234 77.8% 0% 73 min
April 226 76.4% 0% 109 min
May 231 76.9% 0.43% 72 min
June 227 61.9% 0.44% 63 min
July 212 71.3% 0.94% 79 min
August 210 76.6% 1.43% 55 min
September 204 80.8% 0.49% 55 min
October 211 87.2% 0% 78 min
November 201 87% 0.5% 49 min
December 210 82.8% 0% 73 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.