Best time to fly Dublin to Leeds

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

Best month

March

92% on time · 142 flights

Worst month

June

69.7% on time · 322 flights

Month Flights On time Cancelled When late, by
January 124 78.4% 6.45% 0 min
February 120 84.7% 1.67% 0 min
March 142 92% 2.82% 0 min
April 155 86.5% 0% 0 min
May 169 80.5% 0% 0 min
June 322 69.7% 1.55% 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.