Best time to fly Birmingham to Geneva

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

Best month

May

72% on time · 25 flights

Worst month

July

0% on time · 8 flights

Month Flights On time Cancelled When late, by
January 159 53.8% 1.89% 0 min
February 167 64.5% 0.6% 0 min
March 180 70.4% 0.56% 0 min
April 45 64.4% 0% 0 min
May 25 72% 0% 0 min
June 26 61.5% 0% 0 min
July 8 0% 0% 0 min
August 9 44.4% 0% 0 min
September 9 22.2% 0% 0 min
October 9 22.2% 0% 0 min
November 8 62.5% 0% 0 min
December 64 60.9% 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.