Iceland is cool! And WOW isn't bad at all, it's better than a lot of US domestic carriers, especially if they don't skimp on the ticket price, which they prolly won't. I've flown it and the seats are comfortable and there's actually more legroom. Plus the flight is shorter than if you fly all the way to continental Europe, so you are not on the plane as long.
The Northern Lights, also known as the Aurora Borealis are a spectacular natural phenomenon, often seen dancing around in fantastic colours across the Icelandic Arctic sky. The Northern lights are caused by the interaction of particles from the sun with the upper atmosphere near the North Pole.
Hope you can go during the season to see this! Happy Traveling!