- Cairns Airport is located in Cairns, Queensland, Australia. It is an international airport serving the Cairns region and is one of the busiest airports in Queensland. The airport has both domestic and international terminals and offers flights to various domestic destinations in Australia as well as international flights to countries such as New Zealand, Papua New Guinea, China, Japan, and Singapore. Cairns Airport is a gateway to the Great Barrier Reef and is an important transportation hub for tourists visiting the Cairns region.