I travel with Lucy internationally and I bring Nutri Cal, couple of piddle pads (to take her into the cabin bathroom to go pee), wet wipes, her favorite treats, a small baggie with her food (in case we are caught somewhere delayed) and a blankie (since it can get cold under the seat).
I also bring a leash and harness. I wrap the pad in her carry bag in piddle pads, that way if she has an accident I can just throw it away and re-cover it with fresh.
Once inside security I always buy a bottle of water. This sounds kind of wierd but I also bring the lid of a Gaterade bottle with me because it is a perfect size to pour some water in and easy for Lucy to drink from vs. a cup.
One more thing - Please try to avoid medicating Ponky if at all possible. I personally (for myself) and not a fan of medicating for travel unless absolutely necessary. Lucy is very active but she gets very quiet when traveling.
Happy travels
