Talk about getting screwed! DON"T book thur them! What you think you are saving will actually cost you in the end. Esp. If you want to bring normal luggage... then when you try to upgrade they charge you 3 times as much for luggage and then you can only do it by bringing another bag... now you have to pay for more luggage on any connecting or related flights thruout your trip.
Their customer service sucks, (oh, good luck finding the number... I got this by accident *******159 but this agent was SO bad, bad english, talked to fast, had no resolution for me no way!) their website sucks! Now on hold to try to speak to a higher up but... oh, man, esp if going to europe, go direct to airlines! Norweigian is great!