ULCC WowAir is adding more routes to the US next year (4/23/18) utilizing a A321 aircraft. Routes below.

KEF – CVG 4/9/18 4x weekly


KEF – CLE 5/3/18 4x weekly


KEF – DTW 4/25/18 4x weekly


KEF – STL 5/17/18 4x weekly

https://wowair.com/