Matt--you put a bit of tape on the seat post, which you have anyway, then you just put the stem back on the steerer with the same number of spacers under it, that's about it. Reattach the pedals, remember the left one threads on backwards, that's about it. I usually remove the rear derailer and tie a rag or coathanger around the chain so it isn't slapping around in the box. I will stick a packing axle (they come with new bikes, shops have them around) or wood block in the dropouts to prevent damage and pack a bunch of rags around the bike to pad it and give me something to wipe it off when done. Bring allen wrenches, some chain lube and a floor pump to inflate your tires, I usually throw some spare parts and tires in the box and pack my shoes and pedals in my carry on in case the bike gets lost. At the airport, I just ask for a minivan taxi to the hotel.