Best time to fly Hong Kong to London

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full HKG to LHR 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 62 91.9% 0% 0 min
February 51 88.2% 0% 0 min
March 61 93.3% 1.64% 0 min
April 60 86.7% 0% 0 min
May 62 91.9% 0% 0 min
June 60 96.7% 0% 0 min
July 30 86.7% 0% 0 min
August 31 71% 0% 0 min
September 30 64.3% 6.67% 0 min
October 31 90.3% 0% 0 min
November 31 96.7% 3.23% 0 min
December 31 93.5% 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.