Airplane and they are all dead

So, this movie takes place in an airplane. There is a very suspicious dude with a suitcase. The airplane suffers some turbulance but it’s all ok. The suitcase has a doll inside of it and the protagonist finds out that that doll is the representation of death and thinks that’s odd. Lots of things happen and in the end she finds out that everyone is actually dead (including her) and the doll is taking her and she accepts it

sorry, just found it, its “flight 7500” for anyone who is wondering