Best time to fly Faro to London

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

Best month

April

87.9% on time · 510 flights

Worst month

September

52.7% on time · 281 flights

Month Flights On time Cancelled When late, by
January 181 77.2% 0.55% 0 min
February 218 81.2% 0% 0 min
March 305 79.4% 1.31% 0 min
April 510 87.9% 0.98% 0 min
May 575 78.1% 0.52% 0 min
June 576 72.6% 0.35% 0 min
July 303 59.3% 0.99% 0 min
August 303 63.6% 0.33% 0 min
September 281 52.7% 0.71% 0 min
October 269 80.8% 1.49% 0 min
November 136 86.8% 0% 0 min
December 133 81.9% 4.51% 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.