South Korea's high-speed rail (see our South Korea by train guide for how KTX and the wider network work) and domestic flights handle most long-distance travel, but ferries still matter for reaching Jeju Island, exploring the scattered islands of the south coast, and crossing internationally to Japan or China. The network is efficient and well organised by regional standards, though English-language information can be thinner than for the trains — a little advance planning helps.
Busan to Jeju: the main island route
Jeju Island, South Korea's largest island and most popular domestic holiday destination, is reached overwhelmingly by air — flights from Seoul, Busan and other cities are frequent and often inexpensive — but a ferry option exists for travellers who prefer to sail, want to bring a vehicle, or are combining Jeju with a south-coast itinerary.
Ferries to Jeju run from Busan, historically taking somewhere in the region of 11–13 hours overnight, and also from smaller south-coast ports such as Wando, which offers a considerably shorter crossing of a few hours and is a common choice for travellers already on South Korea's south-west coast. Overnight sailings from Busan offer a range of accommodation from shared floor-style ondol rooms (a traditional Korean sleeping arrangement) to private cabins, and vehicles can usually be taken aboard, making the ferry a practical option for a Jeju road trip without renting a separate car on the island.
Given the time difference against a roughly one-hour domestic flight, most independent travellers on a tight schedule fly; the ferry suits those who want to bring a car, are budget-conscious, or simply enjoy the sea crossing itself.
The south-coast islands
South Korea's southern coast, particularly around Yeosu, Tongyeong and the Hallyeohaesang Marine National Park, is scattered with islands connected by frequent local ferries, generally overlooked by international visitors but popular with domestic tourists for their scenery and seafood.
- Tongyeong is a hub for boats out to islands including Somaemuldo and Hansando, with crossings typically taking well under an hour.
- Yeosu serves a similar function further east, with ferries reaching islands such as Geomundo and the routes around Odongdo.
- Further west, ferries from ports near Mokpo reach the Dadohaehaesang Marine National Park islands, an extensive archipelago in the country's south-west corner.
These routes are used mostly by domestic travellers and run on regular but not always English-signposted schedules; local tourist information centres in each port town are the most reliable source for current timetables, and buying tickets in person on the day is standard practice outside peak holiday periods.
Incheon to China
Ferries have long linked Incheon, Seoul's port city, with several Chinese ports, historically including Tianjin, Qingdao, Dalian and Weihai among others, run by a mix of Korean and Chinese operators. These routes are overnight, typically taking somewhere in the region of 14–20 hours depending on the destination port, and have traditionally been used more by traders and freight-adjacent passengers moving goods between the two countries than by leisure travellers, though tourist use exists too, particularly among travellers wanting to avoid flying or bring a large amount of luggage.
Schedules and the specific ports served have changed over the years and were significantly disrupted during the pandemic, with only a partial recovery since; confirm current routes and frequency directly with Incheon Port or a travel agent before planning a trip around this option, as not all pre-pandemic routes have resumed on the same schedule.
Busan to Japan
The Busan–Fukuoka crossing is the best-known and most heavily used international ferry route from South Korea, historically operated by both a high-speed hydrofoil service (around 3 hours) and a slower overnight conventional ferry (roughly 12 hours). The hydrofoil, run primarily by JR Kyushu-affiliated and Korean operators, is popular with travellers doing a quick Korea–Japan add-on, particularly since Fukuoka to Busan is one of the shortest international sea crossings in Asia. See our ferries in Japan guide for how this crossing connects into Japan's own domestic network.
A second route, Busan to Shimonoseki, operates as an overnight conventional ferry and has a long history as a passenger and freight link between the two countries. Both routes require standard passport control and customs at each end, and travellers should check current visa requirements for Japan and Korea for their nationality before relying on either crossing — see our Japan entry requirements guide for the Japan side.
Booking and practicalities
Domestic ferries (Busan–Jeju, the south-coast island network) can generally be booked online through Korean ferry booking platforms or in person at the terminal; English support varies by operator, and buying in person with a translation app to hand is a reliable fallback. International routes to Japan and China are typically booked through the specific operator's website or a travel agent, and require passport details in advance in the same way as booking a flight.
Terminal check-in for both domestic and international sailings tends to close well before departure — allow at least an hour for domestic ferries and two hours for international crossings, given the added passport and customs process. Check current visa rules before booking any of the international routes — our East Asia entry requirements guide covers the general picture for Korea, Japan and China.
Frequently asked questions
Is it better to fly or take the ferry to Jeju?
Flying is faster and often similarly priced or cheaper for a single passenger without a vehicle — domestic flights to Jeju from Seoul or Busan are frequent and roughly an hour. The ferry from Busan (11–13 hours overnight) mainly suits travellers bringing a car or preferring to sail, and the shorter crossing from Wando is a reasonable middle option.
How long is the ferry from Busan to Japan?
The Busan–Fukuoka hydrofoil takes around 3 hours; the slower overnight conventional ferries to Fukuoka or Shimonoseki take roughly 12 hours. Both require standard passport and customs formalities at each end.
Do ferries still run from Incheon to China?
Several routes have historically operated, though schedules were significantly disrupted in recent years and recovery has been partial. Confirm the current status and specific ports served with Incheon Port or a travel agent before planning around this option.
Are South Korea's domestic ferries easy to book without Korean?
Major routes like Busan–Jeju can usually be booked online in English through aggregator sites, or in person at the terminal. Smaller south-coast island ferries are less consistently English-friendly; local tourist information offices are the most reliable source for current timetables.
Sources and further reading:
- Detailed route notes: The Man in Seat 61.
- Korea Tourism Organization (english.visitkorea.or.kr) for domestic ferry and island information.
- Current entry requirements for Japan and Korea: check each country's official immigration authority.