Jeju’s tourist-circulator buses are designed for visitors moving among attractions without a rental car. The official Jeju Bus Information System currently lists 810-1 and 810-2 as circular routes from Daecheon Transit Stop in eastern Jeju, and 820-1 and 820-2 as circular routes from Donggwang Transit Stop in western Jeju.
The route families serve different parts of the island. The 810 loops cover eastern inland attractions such as the Bijarim/oreum corridor, while the 820 loops cover the western Donggwang area and attractions around the Shinhwa, museum and gotjawal corridor. Choose the transfer hub first; do not board simply because the route number looks like a tourist bus.
The current official fare page classifies tourist-circulator buses with ordinary trunk/branch buses. For adults it lists KRW 1,150 by transport card and KRW 1,200 cash; youth KRW 850/900 and children KRW 350/400. These are current single-ride fares, not proof that an older one-day tourist pass shown in past tourism guidebooks is still sold on the same terms.
Why the live system matters: official notices show that 810/820 schedules have previously been reduced, temporarily suspended and resumed, and airport-linked 820 trips were removed. The current schedule list still shows the route families, but individual timetable information can be uneven. Check the route detail on the travel day and verify the return trip before getting off at a rural attraction.
For a car-free day, build the itinerary around a small number of stops on one loop instead of assuming frequent hop-on/hop-off service. In rural Jeju, missing one bus can create a long wait. Keep enough time for the return to Daecheon or Donggwang, and use the official live bus system again before leaving the attraction.