We moved to Thailand with our cat, flew Korean Air as they had similar policy and would allow her to be in the cabin. Gave her anxiety medicine shortly before leaving for the airport. She was very quiet for the first half of the flight and then very upset for the second half. We offered food and water but she wouldn't eat sadly. Too scared 🥺 She did not enjoy the trip but she got here safely, all her documents were in order and we paid a small fee at the airport upon arrival and that was it! As long as your dog is small you should be fine