Best time to fly El Paso to Chicago

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

Best month

February

92% on time · 112 flights

Worst month

July

74.8% on time · 123 flights

Month Flights On time Cancelled When late, by
January 125 81.6% 0% 58 min
February 112 92% 0% 67 min
March 124 82.6% 0.81% 87 min
April 120 75% 3.33% 84 min
May 152 78.8% 0% 55 min
June 124 90.2% 0% 41 min
July 123 74.8% 0.81% 65 min
August 124 84% 3.23% 51 min
September 118 86.4% 0% 41 min
October 123 91.1% 0% 36 min
November 119 86.2% 2.52% 134 min
December 118 84.3% 2.54% 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.