Best time to fly Salina to Chicago

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

Best month

April

88.1% on time · 60 flights

Worst month

December

64.4% on time · 61 flights

Month Flights On time Cancelled When late, by
January 61 64.8% 11.48% 70 min
February 56 85.7% 0% 130 min
March 62 84.2% 8.06% 91 min
April 60 88.1% 1.67% 162 min
May 62 83.9% 0% 96 min
June 60 84.2% 1.67% 194 min
July 53 73.6% 0% 83 min
August 62 79.7% 3.23% 97 min
September 60 86.7% 0% 85 min
October 62 85.5% 0% 39 min
November 58 78.9% 1.72% 75 min
December 61 64.4% 3.28% 58 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.