Best time to fly Los Angeles to Sun Valley/Hailey/Ketchum

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full LAX to SUN 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 93 83.5% 1.08% 90 min
February 81 85% 0% 38 min
March 86 87.2% 0% 75 min
April 8 87.5% 0% 18 min
May 8 100% 0%
June 44 97.7% 0% 187 min
July 83 86.7% 0% 77 min
August 76 89.5% 0% 40 min
September 23 95.7% 0% 98 min
October 19 84.2% 0% 47 min
December 74 79.2% 1.35% 61 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.