That was very informative Mr. Falafel, and to share my experience I was due to travel but then the eruption of Mt. Eyjafjallajokull has interrupted air travel again. The volcano re-erupted and a change of winds induced an ash cloud
to prevent air travel again. Thankfully for travelers this time around it was only overnight and not for days. There's chatter that this volcano may erupt all over again, leading to delays in airline travel yet again. If it is in any way feasible, I would advise not flying into any regions suffering from this volcano until it is certain that there won't be any more activity with the volcano.