With the airline chaos in Europe, people are taking taxis from Norway to London (a mere $5,000!), or waiting at airports in the hope that the airspace will sometime soon. But if one has a bit more time, there are lots of good overland travel options.
Once on dry land, the trains are reliable, fast, and (generally) on time. And although not as well known, Eurolines operates express buses all over Europe.
“Europe without borders”