Best time to fly Spokane to Oakland

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

Best month

January

95.6% on time · 68 flights

Worst month

June

77.9% on time · 77 flights

Month Flights On time Cancelled When late, by
January 68 95.6% 0% 39 min
February 66 95.5% 0% 48 min
March 86 95.3% 0% 29 min
April 83 84.3% 0% 36 min
May 83 91.6% 0% 34 min
June 77 77.9% 0% 40 min
July 106 79.8% 1.89% 41 min
August 97 84.5% 0% 56 min
September 94 93.6% 0% 62 min
October 83 95.2% 0% 22 min
November 85 91.8% 0% 53 min
December 90 85.6% 0% 53 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.