Best time to fly Birmingham to Lisbon

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full BHX to LIS 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 35 71.4% 0% 0 min
February 32 59.4% 0% 0 min
March 36 60% 2.78% 0 min
April 39 79.5% 0% 0 min
May 45 77.8% 0% 0 min
June 42 61.9% 0% 0 min
July 18 50% 0% 0 min
August 18 44.4% 0% 0 min
September 17 52.9% 0% 0 min
October 18 77.8% 0% 0 min
November 13 61.5% 0% 0 min
December 18 55.6% 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.