Best time to fly Seattle to Bend/Redmond

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

Best month

October

89.4% on time · 162 flights

Worst month

July

71% on time · 184 flights

Month Flights On time Cancelled When late, by
January 137 85.4% 3.65% 37 min
February 124 85.2% 7.26% 46 min
March 150 82.9% 2.67% 89 min
April 155 89% 0% 39 min
May 161 88.2% 0% 51 min
June 150 85.3% 0% 49 min
July 184 71% 0.54% 48 min
August 196 78.5% 0.51% 44 min
September 210 86.2% 0% 43 min
October 162 89.4% 0.62% 34 min
November 157 85.5% 6.37% 35 min
December 152 82.8% 0.66% 62 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.