Best time to fly Manchester to Shannon

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

There is not yet enough of the year on record for this route to say anything about seasons. The months below are shown as recorded.

Month Flights On time Cancelled When late, by
January 56 67.9% 0% 0 min
February 48 52.1% 0% 0 min
March 55 69.1% 0% 0 min
April 65 76.9% 0% 0 min
May 61 70.5% 0% 0 min
June 60 71.7% 0% 0 min
July 27 44.4% 0% 0 min
August 26 38.5% 0% 0 min
September 26 38.5% 0% 0 min
October 29 62.1% 0% 0 min
November 30 70% 0% 0 min
December 33 75.8% 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.