To be safe check with the airline you are travelling with. They will have the answer and suggestions so you and your puppy will be safe travelling.
Every airline is different. If you take inside with you I do know you're required to have a veterinarian certificate of health and a note saying you require the animal for comfort, calm or assistance from a health doctor. You need a carrier that fits under the front seat. If pet goes below with luggage, a special carrier, food and water dish that holds enough until destination, health certificate and it's not recommended to sedate them. Check carriers carefully, the top has to bolt on to the bottom not clip.
Speak with the airline you are booked on each airline has guidelines regarding animals in the main cabin.
Thanks! Your answer is awaiting moderation.