I have 2 extra Flite cases that I no longer need. I used them for several trips with our BFs, but they still have plenty of life left. If you want them they are yours free (and as is) so long as you send me a prepaid shipping label (or pick them up from Albany NY or North Adams MA). These are the 2-wheel variety (not spinners) and I believe the dimensions are 29.5 x 12x 20". As I recall, each case weighs about 10.5 pounds, but I haven't weighed them recently. I have not had to pay any extra airline fees, but I also haven't flown with them since 2015. I have used them to transport a NWT and a Family Tandem (used 2 cases). The combination locks work, but I don't have keys. I believe I purchased the cases around 2005 (red) and 2008 (gray). I am keeping the packing stuff because I still have a couple of bikes. But I believe you can get packing material from BF.