Best time to fly San Diego to San Luis Obispo

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

Best month

February

83.5% on time · 95 flights

Worst month

June

64.7% on time · 69 flights

Month Flights On time Cancelled When late, by
January 123 79% 3.25% 37 min
February 95 83.5% 3.16% 58 min
March 99 71.6% 4.04% 48 min
April 89 66.3% 3.37% 46 min
May 94 71% 1.06% 59 min
June 69 64.7% 1.45% 45 min
July 123 68.1% 3.25% 54 min
August 111 82.7% 0.9% 45 min
September 88 80.7% 0% 64 min
October 118 73.6% 5.08% 74 min
November 118 69.4% 4.24% 47 min
December 124 68.2% 11.29% 63 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.