Best time to fly Charlotte to Salt Lake City

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

Best month

January

91.8% on time · 67 flights

Worst month

July

70.3% on time · 92 flights

Month Flights On time Cancelled When late, by
January 67 91.8% 8.96% 36 min
February 73 81.9% 0% 56 min
March 93 91.3% 1.08% 55 min
April 66 84.8% 0% 31 min
May 73 81.9% 1.37% 31 min
June 87 78.2% 0% 75 min
July 92 70.3% 1.09% 44 min
August 86 72.1% 0% 86 min
September 61 82% 0% 67 min
October 88 84.1% 0% 44 min
November 61 85.2% 0% 52 min
December 74 78.4% 0% 49 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.