Best time to fly Austin to Sacramento

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

Best month

August

84.7% on time · 86 flights

Worst month

July

64.7% on time · 116 flights

Month Flights On time Cancelled When late, by
January 71 78.6% 1.41% 45 min
February 71 78.9% 0% 40 min
March 86 79.8% 2.33% 84 min
April 89 80.9% 0% 58 min
May 92 70.3% 1.09% 58 min
June 90 67.8% 0% 62 min
July 116 64.7% 0% 70 min
August 86 84.7% 1.16% 56 min
September 81 79% 0% 40 min
October 82 79.3% 0% 43 min
November 80 83.8% 0% 37 min
December 79 79.7% 0% 58 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.