Best time to fly Idaho Falls to Phoenix

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full IDA to AZA 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 20 70% 0% 216 min
February 13 76.9% 0% 26 min
March 17 70.6% 0% 54 min
April 13 69.2% 0% 58 min
May 12 91.7% 0% 30 min
June 20 90% 0% 118 min
July 23 87% 0% 57 min
August 20 95% 0% 26 min
September 17 70.6% 0% 131 min
October 18 82.4% 5.56% 91 min
November 22 72.7% 0% 109 min
December 26 61.5% 0% 86 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.