Best time to fly Southampton to Ingliston

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

Best month

May

87.6% on time · 203 flights

Worst month

June

60.9% on time · 381 flights

Month Flights On time Cancelled When late, by
January 168 68.1% 4.76% 0 min
February 160 85.3% 2.5% 0 min
March 196 79.3% 4.08% 0 min
April 204 79.9% 0% 0 min
May 203 87.6% 0.49% 0 min
June 381 60.9% 0.52% 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.