Hi! Got your message about wanting some info ab flying with your pup. I actually ended up flying American Airlines but I figure it's all the same. I got a sedative from the vet bc it was a 6 hr flight and Appa did great (we only gave her half a pill). Our layover went smoothly. She was asleep the whole time and didnt want to wake up even to potty. When we got to our destination she was awake and ready to get out of her bag at that point. As long as the bag meets the size requirements and your pup meets weight requirements and can stand up/turn around in the bag that fits that space you should be fine! Hope that helps--any more questions just ask!