On a lighter note, they should be grateful they landed at the correct airport at least!
At City of Derry, (LDY, EGAE) we had a total 'wrong airport' incident several years ago which made headline news at the time!
BBC NEWS | UK | Northern Ireland | Plane lands at airbase by mistake
Ryanair flight drops in at wrong airport - Times Online
Official AAIB report.
Air Accidents Investigation: Airbus A320, EI-DIJ