Can I buy my dogs parvo and distemper shots OTC? If so, do you think it would be enough documentation for the airlines to allow my dog to fly?

You can not buy OTC shots. Call store to verify.

I know they have the Banfield vet services there, I would call to make sure you'd get all the correct documentation so your pet can fly. They do, do shots there.

I am not really sure, sorry!