Jeju is the trip most people add to a Korea itinerary second, after Seoul, and it is the one they most often plan badly. It is not a city break and it is not a place you can wing with a subway card. This guide covers the logistics: getting there, getting around, how long to stay, and what actually deserves your first three days.
Getting there
You fly. Jeju sits about 85 km off the southern coast, and while ferries run from Mokpo, Wando and Busan, they are slow, weather-dependent, and only worth it if you are bringing a vehicle.
The main artery is Gimpo (GMP) to Jeju (CJU). This is not a minor domestic hop — it is regularly cited as the busiest airline route in the world by passenger volume, carrying over 13.7 million passengers in 2023. Practically, that means:
- Flights leave every few minutes through the day on Korean Air, Asiana, Jeju Air, Jin Air, T'way, Air Busan and others.
- Fares are low by international standards. Booked in advance, one-way tickets often land in the ₩40,000–₩90,000 (roughly $29–$65) range, with peak summer and holiday pricing running well above that.
- Block time is about an hour, so plan roughly 70 minutes gate to gate.
- Delays are routine. Jeju's airport handles far more traffic than it was designed for, and wind and fog close it outright several times a year. Do not book a same-day international connection out of Incheon on the back of a Jeju flight. Leave a night's buffer.
Note the Seoul airport split: most domestic Jeju flights go from Gimpo, not Incheon. Gimpo is on Seoul Subway Line 5 and the AREX line, so it is easy to reach from central Seoul — but confirm which airport your ticket says before you leave your hotel.
You need a car (or a tour)
This is the single most important planning fact about Jeju, and the one first-timers most often get wrong.
Jeju has public buses, and they are cheap and genuinely usable. But the system is built around Jeju City in the north and Seogwipo in the south, with routes radiating out along the coast and over the middle. The places you came to see — a waterfall here, a coastal cliff twenty kilometres away, a cafe on a tangerine farm — are scattered around a ring road with very little connecting them. A journey a car does in 25 minutes can take two hours by bus with a transfer in the middle.
Your realistic options:
- Rent a car. The default choice, and the cheapest per day if there are two or more of you. You will need an International Driving Permit issued in your home country alongside your home licence — Korea does not accept a translation app or a photocopy, and rental desks check. Get the IDP before you fly; you cannot obtain one after you land. Rentals start around ₩40,000–₩70,000/day for a compact plus insurance, and parking at major sites is cheap or free.
- Book day tours. Several operators run full-day east-coast and west-coast circuits from Jeju City hotels. This is the right call if you do not drive, and it solves the hardest routing problems for you.
- Buses plus walking is viable if you are staying put in one area, hiking, or on a tight budget — just do not plan a "see the whole island" itinerary around it. Taxis are affordable for short hops, but a full day of taxi-hopping gets expensive fast.
How many days
Three full days is the honest minimum. Two days means you see the airport, one coast and not much else. Three lets you do the east coast, the south coast and either a mountain day or a slow day. Four to five is comfortable and gives you weather slack, which matters — Jeju gets a lot of rain and wind, and a washed-out day is normal rather than bad luck.
If you are hiking Hallasan, treat that as its own day and add it on top.
The first-visit shortlist
Hallasan
Hallasan is South Korea's highest peak at 1,947 m (6,388 ft) — a shield volcano that forms the whole island and whose natural reserve is part of the Jeju Volcanic Island and Lava Tubes UNESCO World Heritage site.
Two trails reach the summit crater: Seongpanak (9.6 km one way) and Gwaneumsa (8.7 km one way). Both are long day hikes — budget 8 to 9 hours round trip — on well-built but relentless stone-and-boardwalk paths. The other routes (Eorimok, Yeongsil, Donnaeko) are shorter and beautiful but stop at Witse Oreum; the upper sections have been closed since 1994 so the vegetation can recover.
The summit trails require an advance reservation. Book a dated slot through the official Hallasan reservation site before you go — walk-ups are turned away, and trails are occasionally closed entirely for weather or restoration work. Park entry itself is free; you pay for parking. There are also seasonal cut-off times at the mid-point shelters: miss the cut-off and rangers will send you back down, so start early.
Seongsan Ilchulbong (Sunrise Peak)
A 182 m tuff cone on the eastern tip of the island, formed by a shallow-water eruption and now one of the three components of the island's UNESCO World Heritage listing. The climb to the crater rim takes about 30 minutes on stairs, and the reward is a huge grass-floored bowl ringed by jagged rock with the sea on three sides. There is a modest entrance fee — check the current rate at the gate.
Go at sunrise if you can commit to it; go early morning if you cannot. By mid-morning it is one of the most crowded places on the island.
Udo
A small island off Seongsan, reached by a short ferry crossing from Seongsan Port — the trip takes well under half an hour. Udo is flat, green, edged with black basalt and one improbably white coral-sand beach, and it is the best half-day on Jeju that does not involve a mountain.
Practical notes: visitors generally cannot bring a rental car across, so plan on the island's circular tour bus, a rented electric scooter or a bike — confirm current rules when you buy your ferry ticket, as they have changed. Ferries stop running in rough weather, sometimes at short notice, so do not schedule a flight for the same evening.
The haenyeo
Jeju's haenyeo are women who free-dive for shellfish and seaweed without air tanks, holding their breath on repeated descents, working into their seventies and eighties. It is a matriarchal working tradition, not a performance: for generations these women were the primary earners in their households on an island where farming was hard and men often died at sea.
UNESCO inscribed the "Culture of Jeju Haenyeo (women divers)" on its Representative List of the Intangible Cultural Heritage of Humanity in 2016. That recognition came partly because the tradition is fading — the working population has fallen sharply and skews elderly.
You can see it honestly at the Haenyeo Museum in Hado-ri on the east coast, and you may catch divers surfacing near Seongsan or along the eastern shore. If you do: watch from a distance, do not crowd them as they come out of the water, and buy something from the seafood stalls the divers' cooperatives run. That is the point of the thing.
More: Visit Jeju