Best time to fly Thessaloniki to London

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full SKG to STN 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 48 60.4% 0% 0 min
February 64 81% 1.56% 0 min
March 68 80.9% 0% 0 min
April 50 90% 0% 0 min
May 51 78.4% 0% 0 min
June 51 74.5% 0% 0 min
July 23 52.2% 0% 0 min
August 22 72.7% 0% 0 min
September 22 68.2% 0% 0 min
October 25 80% 0% 0 min
November 36 94.4% 0% 0 min
December 34 88.2% 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.