Hi, I'll be picking up my new puppy from a breeder who is about 4 hour flight away from me and I've heard of people being able to bring 11 week old huskies back under their seat in the cabin. Is this possible or should I consider bringing him back in cargo?

Hi Alinah <??>. While I don't personally have any experience with 'flying dogs' I think that if you have the option of 'carry on' it would be much better for the pup.
My concerns would be that for a short flight and probably a smallish plane the baggage compartment might not be pressurized - the altitude is low enough that there's no major strain on the pup but it would be at least uncomfortable.

We recently had a member who flew her new dog (adult) and I'm hoping she sees this thread as I can neither find it nor remeber her name. (CRS is bad this morning!!)

Most planes if the pup will fit in a carrier the size of your carry on bag then you can take it with you in cabin. As Al said though smaller planes may not even allow you to cargo flight an animal because of pressure or temperature in the cargo hold. You will have to verify with the company before you buy your tickets what their policy is.

i think delta airlines let you take your puppy as a carry on, our trainer said she got to take her staffies Pearl as her carry on. i think being in the plane is better for your puppy then being in the cargo area.