From Incheon station or Dong-Incheon station (Seoul Subway Line 1), take city bus No. 306 bound for Eurwang-ri and get off at Geojampo. Walk 10 min to Jamjinnaru Ferry Terminal, Yeongjongdo Island. Then, take a ferry to Muuido Island.
Ferry Cruise : Jamjinnaru Ferry Terminal → Muuido Island
Hours: 7:00-19:00 (Weekends 19:30) / 30 min interval on weekdays / 15 min interval on weekends
Fare (round-trip): age 13 or over: 2,000 won / 7-12: 1,400 won / 6 or under: free
For more information about Muuido Island (only in Korean) go here