Best time to fly San Diego to Honolulu

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

Best month

May

79.9% on time · 152 flights

Worst month

July

56.9% on time · 146 flights

Month Flights On time Cancelled When late, by
January 155 79.2% 1.29% 101 min
February 142 69.1% 2.11% 82 min
March 155 73.5% 0.65% 50 min
April 150 71% 0% 38 min
May 152 79.9% 1.32% 42 min
June 146 70.1% 1.37% 45 min
July 146 56.9% 1.37% 72 min
August 147 73.1% 0% 42 min
September 141 74.3% 0.71% 65 min
October 145 73.8% 1.38% 67 min
November 133 75.2% 1.5% 58 min
December 156 68.7% 3.21% 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.