Best time to fly Spokane to Dallas/Fort Worth

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

Best month

February

85.7% on time · 50 flights

Worst month

August

71.7% on time · 124 flights

Month Flights On time Cancelled When late, by
January 61 81% 4.92% 137 min
February 50 85.7% 0% 44 min
March 69 84.8% 4.35% 155 min
April 62 83.6% 0% 74 min
May 100 81.6% 1% 61 min
June 120 77% 1.67% 59 min
July 125 72.5% 4% 67 min
August 124 71.7% 0.81% 108 min
September 120 79.5% 0.83% 99 min
October 123 81% 0% 97 min
November 72 78.3% 1.39% 101 min
December 81 79.7% 1.23% 102 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.