Incheon is also a gateway to west-coast islands. The Incheon Port Authority’s coastal passenger-terminal site lists routes including Baengnyeong, Deokjeok and Ijak-area services, but travelers should plan by the exact island and operator rather than assuming every ferry uses the same schedule.
The most important step is the travel-day operation check. Incheon Port Authority explains that domestic coastal operations are decided around 06:30 on the day after considering weather and sea conditions. Before that decision, a route may still appear normal. Korea Maritime Transportation Safety Authority (KOMSA) also publishes same-day ferry operation status and directs travelers to PATIS for detailed ferry traffic information.
That means an advance booking or an old timetable should not be treated as proof that the vessel will sail. If the trip depends on a same-day return, verify both the outbound and return direction before leaving the city.
Allow extra time at the terminal for ticketing and boarding formalities, and follow the operator’s current identification and vehicle rules for your exact sailing. This guide does not generalize one operator’s baggage, vehicle or ID procedure to every Incheon route.
Practical next step: on the morning of travel, open the Incheon coastal-terminal page and KOMSA operation status, search the exact island/route, then confirm any remaining ticket or boarding question with the passenger-terminal consultation line.