Best time to fly Portland to Charlotte

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

There is not yet enough of the year on record for this route to say anything about seasons. The months below are shown as recorded.

Month Flights On time Cancelled When late, by
January 33 100% 9.09%
February 28 92.9% 0% 29 min
March 31 87.1% 0% 89 min
April 30 96.7% 0% 16 min
May 41 85.4% 0% 48 min
June 58 89.5% 1.72% 170 min
July 62 77% 1.61% 93 min
August 36 94.3% 2.78% 60 min
September 30 90% 0% 45 min
October 31 90.3% 0% 66 min
November 30 90% 0% 45 min
December 31 100% 0%

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.