Best time to fly Charlotte to Cedar Rapids/Iowa City

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

Best month

January

87.1% on time · 68 flights

Worst month

July

46% on time · 93 flights

Month Flights On time Cancelled When late, by
January 68 87.1% 8.82% 56 min
February 69 73.9% 0% 47 min
March 92 73% 3.26% 52 min
April 66 69.7% 0% 71 min
May 62 69.4% 0% 111 min
June 60 50.8% 1.67% 83 min
July 93 46% 5.38% 80 min
August 92 72.5% 1.09% 81 min
September 90 84.1% 1.11% 76 min
October 117 80.3% 0% 85 min
November 115 81.3% 1.74% 64 min
December 81 68.4% 2.47% 194 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.