Northern Air Cargo does have a backhaul rate for single dogs in an airline crate for $50 each. I am not sure how this would compare to shipping dogs in a single dog box. If these boxes are available, does anyone have the dimensions and approxiamate weight? I have been working with a specific person at Northern Air Cargo on Serum Run shipping for the past couple of months. She asked that I contact her once the team is set so we can get more specific on our shipping needs.