Best time to fly Phoenix to Spokane

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full AZA to GEG 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 18 94.4% 0% 23 min
February 16 86.7% 0% 149 min
March 18 83.3% 0% 20 min
April 16 100% 0%
May 18 88.9% 0% 92 min
June 19 83.3% 5.26% 111 min
July 17 94.1% 0% 58 min
August 18 94.4% 0% 16 min
September 2 50% 0% 59 min
October 17 64.7% 0% 62 min
November 18 83.3% 0% 344 min
December 19 88.9% 0% 65 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.