Best time to fly Santa Rosa to Los Angeles

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

Best month

June

91.9% on time · 74 flights

Worst month

July

73.8% on time · 61 flights

Month Flights On time Cancelled When late, by
January 45 82.9% 8.89% 45 min
February 44 88.4% 2.27% 41 min
March 63 85.7% 0% 53 min
April 72 87.5% 0% 82 min
May 58 81% 0% 68 min
June 74 91.9% 0% 53 min
July 61 73.8% 0% 47 min
August 69 84.1% 0% 84 min
September 77 79.2% 0% 73 min
October 51 86.3% 0% 58 min
November 50 84.4% 10% 44 min
December 38 75.9% 23.68% 141 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.