Best time to fly Aberdeen to London

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

Best month

April

93.3% on time · 360 flights

Worst month

January

70.8% on time · 475 flights

Month Flights On time Cancelled When late, by
January 475 70.8% 7.79% 0 min
February 424 92.5% 0% 0 min
March 456 86.8% 3.95% 0 min
April 360 93.3% 0% 0 min
May 376 89.4% 0% 0 min
June 659 81.3% 2.43% 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.