Bunton made her international debut for the Sapphires at the 2010 Under-17 World Championship in France, where Australia placed 7th. Bunton would then represent the Gems at the 2011 Under-19 World Championship in Chile the following year, where they finished in fourth place and narrowly missed out on a medal. She also represented Australia at the 2015 Summer Universiade in Gwangju, South Korea, where they placed 5th.