It's less than 30 years since we had a much, much larger eruption than Eyjafjallajökull. Mount Pinatubo erupted one June 12th 1991. That was a VEI-6 eruption.

Eyjafjallajökull was only VEI-4.

Now, one can argue about how Eyjafjallajökull caused ashfall in most of Europe, while Pinatubo is in the Philippines, but given the extent of ashfall from Pinatubo ..

EDIT (forgot link): https://en.wikipedia.org/wiki/1991_eruption_of_Mount_Pinatub...