Best time to fly Bellingham to Oakland

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full BLI to OAK 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 10 100% 0%
February 8 100% 0%
March 9 88.9% 0% 69 min
April 8 87.5% 0% 17 min
May 8 62.5% 0% 112 min
July 22 95.5% 0% 23 min
August 13 92.3% 0% 16 min
September 13 100% 0%
October 10 100% 0%
November 10 100% 0%
December 12 58.3% 0% 61 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.