Best time to fly Kansas City to Los Angeles

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

Best month

January

91.7% on time · 127 flights

Worst month

July

79% on time · 238 flights

Month Flights On time Cancelled When late, by
January 127 91.7% 4.72% 106 min
February 132 79.4% 0.76% 41 min
March 192 87.4% 0.52% 107 min
April 201 79.6% 0% 55 min
May 244 82.9% 1.64% 53 min
June 270 81.8% 0.37% 63 min
July 238 79% 3.78% 85 min
August 225 82.1% 0.89% 41 min
September 220 85% 0% 58 min
October 209 84.2% 0% 58 min
November 197 84.8% 0% 58 min
December 174 79.1% 0.57% 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.