Best time to fly Bristol to Pisa (PI)

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full BRS to PSA 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 18 83.3% 0% 0 min
February 16 75% 0% 0 min
March 19 89.5% 0% 0 min
April 44 90.9% 0% 0 min
May 44 88.6% 0% 0 min
June 42 83.3% 0% 0 min
July 23 65.2% 0% 0 min
August 22 81.8% 0% 0 min
September 21 81% 0% 0 min
October 18 72.2% 0% 0 min
November 8 100% 0%
December 9 44.4% 0% 0 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.