When will planes in europe be able to fly again?

Most European and UK airports will remain closed until the respective airport authorities determine that the ash cloud no longer poses a risk to aviation. No date has been given however, the BAA in the UK has said they will review the situation on Sunday morning based on meteorological data provided on the cloud and its movement. Once airports open there will be a mive backlog of pengers to clear so the opening of airports may not mean booked flights are immediately available. It has been reported that the ramifications of the ash cloud may continue for several days.