Best time to fly Tenerife to London

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

Best month

November

81% on time · 179 flights

Worst month

September

52.4% on time · 146 flights

Month Flights On time Cancelled When late, by
January 351 74.6% 0.28% 0 min
February 341 72.8% 0.88% 0 min
March 372 71.7% 0.27% 0 min
April 366 75.6% 0.27% 0 min
May 343 75.9% 0.87% 0 min
June 296 65.8% 0.34% 0 min
July 143 54% 2.8% 0 min
August 143 72% 0% 0 min
September 146 52.4% 0.68% 0 min
October 173 75.1% 0% 0 min
November 179 81% 0% 0 min
December 178 74.6% 0.56% 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.