Best time to fly Zakynthos to London

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full ZTH to LGW 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
March 3 100% 0%
April 44 83.3% 4.55% 0 min
May 104 72.1% 0% 0 min
June 123 58.7% 1.63% 0 min
July 70 35.7% 0% 0 min
August 77 39.5% 1.3% 0 min
September 73 34.3% 4.11% 0 min
October 52 63.5% 0% 0 min
November 5 100% 0%

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.