I don't think that was part of the intent - the weight and structural strength is probably a problem (including the strength of the glue joints), and the aerodynamics (because the connections between segments aren't airtight). The materials that the real plane is made of will have properties that are more suitable for a flying object.

There are plenty of flying models of various airliners. Some of them are quite detailed, though none with the incredible interior detailing this 777 has.

You could put a lot of detail into a model that was intended to fly, but you wouldn't want start off with something intended to be a static model.