I have the Sherpa Ultimare dog carrier. It is plane approved. I have the small one. It is roomy.
Sherpa Ultimate Dog Carrier
I have the Solvit Tagalong Deluxe Booster Seat. It works great on my bucket seats of my car. I would suggest you contact the airline to find out if you can use that on a plane.
http://www.petsmart.com/product/inde...AvailInUS%2FNo