How should I travel with my dog on a plane?

Well, Delta Airlines is actually not too strict with what you use. I would suggest a small cage, one that's not too hard shelled. Maybe a hard shelled bottom with a fabric top? Make sure and put absorbing fabric on the bottom, and put a blanket over the cage to calm the dog down. Talk to the dog if there is any turbulence so he knows you are there. At any last resort, medication to help the dog fall asleep or to calm it down would be of good use. Hope this helps! :)