I brought my bike to Canada a couple of years ago and used a box. Went down to the LBS and asked if they had any spare boxes lying around, got one off them from a complete BMX. Disassembled the bike and cut the box down a little so it wasn't so cumbersome, used a good bit of duck tape on the box's more vulnerable joins and it was good to go, brought it on the flight as sporting equipment. I honestly think paying a lot for a bag is a bit ridiculous as you can pad out the box if you like or fill it with clothes and whathaveyou, I know when I had the bike in the box it was way under the sporting goods weight limit.
I brought my bike to Canada a couple of years ago and used a box. Went down to the LBS and asked if they had any spare boxes lying around, got one off them from a complete BMX. Disassembled the bike and cut the box down a little so it wasn't so cumbersome, used a good bit of duck tape on the box's more vulnerable joins and it was good to go, brought it on the flight as sporting equipment. I honestly think paying a lot for a bag is a bit ridiculous as you can pad out the box if you like or fill it with clothes and whathaveyou, I know when I had the bike in the box it was way under the sporting goods weight limit.