Best time to fly Berlin to London

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full BER to LCY record →

Best month

April

92.1% on time · 89 flights

Worst month

January

67.2% on time · 63 flights

Month Flights On time Cancelled When late, by
January 63 67.2% 3.17% 0 min
February 79 79.5% 1.27% 0 min
March 94 80.9% 0% 0 min
April 89 92.1% 0% 0 min
May 93 91.4% 0% 0 min
June 197 82.7% 0.51% 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.