Best time to fly London to Inverness

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

Best month

February

89% on time · 83 flights

Worst month

June

71.9% on time · 146 flights

Month Flights On time Cancelled When late, by
January 90 80.5% 3.33% 0 min
February 83 89% 1.2% 0 min
March 94 81.5% 2.13% 0 min
April 146 89% 0% 0 min
May 149 83.2% 0% 0 min
June 146 71.9% 0% 0 min
July 62 83.9% 0% 0 min
August 62 77% 1.61% 0 min
September 60 80% 0% 0 min
October 59 83.1% 0% 0 min
November 60 85% 0% 0 min
December 53 88.7% 0% 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.