I've flown with Norwegian and had exactly this question, used an Evoc bag and it was fine - the Evoc is a rigid bag, if that makes sense? But I would expect you'll be fine with a normal bag, just as long as the bike is packed in something "official".
I've flown with Norwegian and had exactly this question, used an Evoc bag and it was fine - the Evoc is a rigid bag, if that makes sense? But I would expect you'll be fine with a normal bag, just as long as the bike is packed in something "official".