According to Gimhae Airport's official transport guide, leave the domestic terminal through Gate 1 and cross the road for the Busan–Gimhae Light Rail Transit Airport Station. Near Gate 4, the bus ticket counter is about 10 m to the right after exiting; the taxi rank is across the pedestrian crossing outside the same gate. Check your destination and the currently operating bus service on the airport's public-transport page before buying a ticket. These exit directions are for the domestic terminal, not automatically for the international terminal.