Best time to fly Phoenix to Bismarck/Mandan

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full AZA to BIS 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 56 92.9% 0% 43 min
February 61 91.8% 0% 34 min
March 74 85.1% 0% 55 min
April 58 91.4% 0% 54 min
May 31 90.3% 0% 26 min
June 31 53.3% 3.23% 43 min
July 45 72.1% 2.22% 45 min
August 27 96.3% 0% 46 min
September 22 100% 0%
October 36 91.7% 0% 43 min
November 36 83.3% 0% 52 min
December 48 77.1% 0% 69 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.