Best time to fly Glasgow to Rome

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full GLA to FCO 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 28 89.3% 0% 0 min
February 40 87.5% 0% 0 min
March 42 90.5% 0% 0 min
April 46 89.1% 0% 0 min
May 49 85.7% 0% 0 min
June 48 81.3% 0% 0 min
July 8 87.5% 0% 0 min
August 9 88.9% 0% 0 min
September 9 88.9% 0% 0 min
October 12 91.7% 0% 0 min
November 17 88.2% 0% 0 min
December 21 70% 4.76% 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.