It looks ilke I"m probably too late, but....

In Portland-Metro (oregon) you can go to a bike gallery store and they will box it for you in a cardboard box for $50 packing fee. It's WELL worth the money! I had them do that on one trip and then went to a bike shop to have it packed to return home--they did a much inferior job to the Bike Gallery.

Also, You can pick up bike boxes onilne at E-bay and then rent them through bike stores to pay it off or go to the bike store to see if they have rentals or know someone who does.

Be sure to check each airline's rules as they are different!

Joan