Best time to fly Bakersfield to San Francisco

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

Best month

August

93.1% on time · 101 flights

Worst month

April

65.6% on time · 90 flights

Month Flights On time Cancelled When late, by
January 94 79.6% 1.06% 95 min
February 82 78% 0% 114 min
March 89 87.6% 0% 230 min
April 90 65.6% 0% 53 min
May 101 81% 0.99% 48 min
June 120 70% 0% 56 min
July 92 80.4% 0% 81 min
August 101 93.1% 0% 46 min
September 113 90.3% 0% 38 min
October 124 84.7% 0% 56 min
November 118 79.8% 1.69% 42 min
December 125 77.2% 1.6% 67 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.