Best time to fly San Diego to Milwaukee

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

There is not yet enough of the year on record for this route to say anything about seasons. The months below are shown as recorded.

Month Flights On time Cancelled When late, by
January 8 100% 0%
February 11 100% 0%
March 21 76.2% 0% 40 min
April 18 70.6% 0% 51 min
May 17 52.9% 0% 81 min
June 32 68.8% 0% 41 min
July 8 50% 0% 41 min
August 2 100% 0%
October 21 95.2% 0% 19 min
November 20 70% 0% 80 min
December 17 64.7% 0% 38 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.