Best time to fly Belfast to Liverpool

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

Best month

March

95.6% on time · 229 flights

Worst month

January

68.9% on time · 205 flights

Month Flights On time Cancelled When late, by
January 205 68.9% 4.39% 0 min
February 204 89.2% 0% 0 min
March 229 95.6% 0.44% 0 min
April 232 90.5% 0% 0 min
May 230 83.9% 0% 0 min
June 426 79.6% 0.94% 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.