Yeah, that's what many people say they do. But what do you do with the box
when you get there ?

Depends, last year, when we flew from Stockholm to Denver we left the boxes
there with some friends, we had all our stuff in boxes as we had two BOBs
too. Then, we used the same boxes on our return trip. When we went to India
we did the same. Bike boxes are not easily avaiable there. Same for Mallorca
and the Canary Islands. Well boxes are probably available but one uses the
same box going in and out.

On the other hand when we have flown to SEA we have just left the boxes in
the hotels we spent the first night. Then, we got new boxes in Bangkok. When
we landed in Geneva we unpacked right next to the conveyour belt or whatever
it is called where you pick up the luggage, put on the pedals, mounted the
steering bar and the panniers, dumped the boxes in a place for trash, and
then we cycled through customs and migration.

Boxes are safe, you can protect the bike quite well, and they tend to be
available almost anywhere, takes five or ten minutes to get the bike
unpacked and ready to go. Some send their bikes as they are, perhaps with
just some cardboard wrapped around, seems to work too, but our bikes are
just to good for us to let them be handled like that, we also have a
fascistoid tendency (our only!) about wheels. I just can?t tolerate wheels
that are untrue.

Per
http://lowdin.nu