Best time to fly Baltimore to Sacramento

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full BWI 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 31 63.3% 3.23% 49 min
February 28 60.7% 0% 48 min
March 57 63.6% 1.75% 37 min
April 60 60% 0% 47 min
May 62 67.7% 0% 40 min
June 60 68.3% 0% 55 min
July 47 45.7% 0% 89 min
August 46 64.4% 2.17% 46 min
September 30 86.7% 0% 39 min
October 31 71% 0% 30 min
November 29 62.1% 0% 54 min
December 31 45.2% 0% 56 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.