Best time to fly Los Angeles to Kansas City

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

Best month

September

89.4% on time · 220 flights

Worst month

June

78.7% on time · 270 flights

Month Flights On time Cancelled When late, by
January 127 89.2% 3.94% 66 min
February 131 84% 0% 75 min
March 192 84.3% 0.52% 81 min
April 201 86.1% 0% 44 min
May 245 85% 1.22% 47 min
June 270 78.7% 0% 54 min
July 238 81.1% 4.2% 63 min
August 224 87% 0.45% 54 min
September 220 89.4% 0% 56 min
October 210 87.1% 0% 96 min
November 197 84.2% 0.51% 43 min
December 172 80.1% 0.58% 74 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.