It’s obvious one cannot just “cap” a Volcano so I wonder if air transport authorities haven’t already started planning and charting alternate routes as a contingency plan.
A colossal task but perhaps the only way to go rather than pretending that turning a blind eye will cause the problem to go away?
On the other hand, maybe this will bring the best out of human creativity and engineering again – returning to seaways after having dominated the skies for so long?