My first real drone was the DJI Phantom 2 and getting that from A to B was simply a nightmare. To transport the Phantom, you had to either have an enormous backpack or be prepared to dismantle most of it!
Now, the DJI Mavic Pro is significantly more compact and can be accomodated in a much more travel friendly bag.
The bag I stumbled upon was the Lowepro Viewpoint 250 – which comes with a nice gadget organiser the and can accomodate a second Viewpoint CS 80. The picture below shows the two organisers filled with the Mavic, spare batteries, blades, GoPro and all the various cables/adapters required by the new MacPookPro’s USB-C ports!