Belfast International , Dublin , Donegal , Sligo and Ireland West ( Knock ) airports set to close . Volcano , weather may disrupt air travel in Britain between Sunday and Tuesday . Volcanic ash can be a serious hazard to aircraft , reducing visibility , damaging flight controls and ultimately causing jet engines to fail . Comment:
Belfast International , Dublin , Donegal , Sligo and Ireland West ( Knock ) airports set to close . Volcano , weather may disrupt air travel in Britain between Sunday and Tuesday . Comment: