Best time to fly Newark to Sacramento

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full EWR to SMF 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 11 63.6% 0% 60 min
March 5 100% 0%
April 60 63.3% 0% 143 min
May 62 75.8% 0% 64 min
June 60 75.9% 1.67% 78 min
July 62 55.4% 9.68% 120 min
August 62 50.8% 4.84% 69 min
September 60 81.4% 1.67% 71 min
October 62 61.3% 0% 41 min
November 60 80% 0% 58 min
December 62 70% 1.61% 49 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.