Best time to fly San Francisco to Bakersfield

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

Best month

March

88.8% on time · 89 flights

Worst month

June

58.3% on time · 120 flights

Month Flights On time Cancelled When late, by
January 95 79.6% 2.11% 72 min
February 82 76.5% 1.22% 64 min
March 89 88.8% 0% 67 min
April 90 85.6% 0% 49 min
May 101 81.2% 0% 72 min
June 120 58.3% 0% 67 min
July 92 72.8% 0% 50 min
August 101 86.1% 0% 45 min
September 113 80.5% 0% 39 min
October 124 80.6% 0% 77 min
November 118 83.8% 0.85% 69 min
December 123 75% 1.63% 111 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.