Best time to fly Bristol to Aberdeen

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

Best month

May

96.6% on time · 90 flights

Worst month

January

69.2% on time · 70 flights

Month Flights On time Cancelled When late, by
January 70 69.2% 7.14% 0 min
February 72 70.8% 0% 0 min
March 88 88.6% 0% 0 min
April 94 88.3% 0% 0 min
May 90 96.6% 1.11% 0 min
June 87 75.3% 2.3% 0 min
July 44 95.5% 0% 0 min
August 40 71.1% 5% 0 min
September 38 84.2% 0% 0 min
October 42 77.5% 4.76% 0 min
November 44 75% 18.18% 0 min
December 33 81.8% 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.