Best time to fly Belfast to Leeds

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

Best month

February

88.6% on time · 329 flights

Worst month

July

64% on time · 207 flights

Month Flights On time Cancelled When late, by
January 387 79.4% 6.98% 0 min
February 329 88.6% 1.52% 0 min
March 367 85% 2.18% 0 min
April 453 80.9% 1.77% 0 min
May 459 84.5% 0.44% 0 min
June 438 76.5% 2.05% 0 min
July 207 64% 1.93% 0 min
August 199 64.9% 7.04% 0 min
September 180 72.9% 1.67% 0 min
October 170 69.4% 7.65% 0 min
November 159 83.6% 4.4% 0 min
December 173 68.6% 9.83% 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.