Best time to fly Inverness to London

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

Best month

February

87.8% on time · 83 flights

Worst month

January

69% on time · 90 flights

Month Flights On time Cancelled When late, by
January 90 69% 3.33% 0 min
February 83 87.8% 1.2% 0 min
March 93 82.2% 3.23% 0 min
April 146 81.5% 0% 0 min
May 149 75.2% 0% 0 min
June 146 71.9% 0% 0 min
July 62 79% 0% 0 min
August 62 70.5% 1.61% 0 min
September 60 71.7% 0% 0 min
October 60 71.2% 1.67% 0 min
November 60 86.2% 3.33% 0 min
December 53 84.6% 1.89% 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.