Do you need a car in Jeju?

Effectively yes. Buses reach the main sights but slowly and infrequently, and the island's appeal is the coastal road and the places between the attractions. Without a car you will see a fraction of it.

How do you get to Jeju from Seoul?

By air, in about an hour. The Seoul to Jeju route is one of the busiest in the world, with frequent departures from both Gimpo and Incheon, and fares are often cheaper than the KTX to Busan.

How many days do you need in Jeju?

Three days covers the main sights at a reasonable pace. Two is rushed. Four or more lets you slow down, which is closer to the point of the island.

Can I climb Hallasan in a day?

Yes, but it is a full and demanding day — the summit routes take roughly eight to ten hours return, and there are enforced cut-off times at checkpoints to prevent descending in darkness.

Jeju Island: What to Know Before You Book

Jeju is a volcanic island off the south coast, an hour's flight from Seoul on one of the busiest air routes in the world. It is where Koreans go on honeymoon and where the landscape stops looking like the mainland — black basalt, tangerine groves, a dormant volcano in the middle, and a coastline you can drive around in a day.

There is one planning decision that shapes everything else, so start there.

The car question

You need a car. This is the single most important thing to know before booking.

Jeju's attractions are spread around a roughly circular island. Buses connect the main ones, but slowly and infrequently, and the actual appeal of Jeju is the coastal road and the things between the marked stops — a beach nobody is at, a café built into a lava field, a road with the sea on one side and the volcano on the other.

Without a car you will spend the trip waiting for buses and see a fraction of the island.

What you need to rent one: an International Driving Permit obtained in your home country before you travel (it cannot be issued in Korea), your home licence, and a credit card. Rental desks cluster at the airport.

If you cannot drive, the honest alternatives are taxi day-hire, organised tours, or staying in one area and accepting a smaller trip. All are workable; none give you the island.

Getting there

Flights leave from both Gimpo and Incheon, frequently, all day. Gimpo is closer to central Seoul and usually the better choice. Fares are competitive — often less than the KTX to Busan — because the route is so heavily served.

Jeju has no train. The airport is close to Jeju City, in the north.

What is actually worth seeing

Seongsan Ilchulbong — a volcanic tuff cone rising straight out of the sea at the eastern tip. The name means "sunrise peak" and the walk up takes under an hour. The most photographed place on the island, deservedly.

Hallasan — the dormant volcano at the centre, and South Korea's highest mountain. Several trails; the summit routes take roughly eight to ten hours return and are properly demanding. There are enforced turnaround times at checkpoints so nobody descends in the dark. Even the lower trails are worth a half-day.

Manjanggul Lava Tube — a lava cave you walk through, one of the largest of its kind. Cold year-round; bring a layer.

Udo — a small island off the east coast, reached by a short ferry. Rent a scooter or an electric cart and circle it in an afternoon. Frequently the part of the trip people remember most.

The Olle Trails — a network of waymarked walking routes around the coast, numbered by section. You do not need to walk the whole thing; picking one coastal section for a morning is one of the best uses of a day on Jeju.

The coastal road itself. Not an attraction, and the reason to have the car.

What to skip

Jeju has an unusual density of small private museums and themed attractions — teddy bear museums, illusion museums, and a great many others. They exist for a particular kind of domestic package holiday. Unless one specifically appeals, they are a poor use of a limited number of days.

When to go

Spring and autumn are the best, matching the mainland pattern in when to visit Korea. Jeju runs a little milder than Seoul year-round.

Summer is peak season — warm sea, full beaches, highest prices, and the most likely window for a typhoon. Late summer storms do occasionally cancel flights, and being stuck on an island is a real if uncommon risk. The Korea Meteorological Administration publishes warnings in English.

Winter is quiet and cheap, and Hallasan under snow is genuinely spectacular. The sea is not for swimming.

Practical notes

Jeju has its own food. Black pork, abalone, and seafood dishes not commonly found on the mainland. How to order in a Korean restaurant applies unchanged.

Two to three days is the working range. Three is comfortable; two means choosing between east and west.

The dialect is distinct enough that mainland Koreans do not always follow older speakers. This has no practical effect on a visitor but is a real thing you may hear referenced.

Accommodation is spread out. Staying in Jeju City puts you near the airport and the restaurants; staying on the east or south coast puts you near the landscape. With a car, either works.

The verdict

Jeju is the best thing in Korea that is not a city — provided you can drive. If you can, three days there is worth more than three more days in Seoul. If you cannot, and you only have a week in Korea, two days in Busan gives you more for less effort.

Written August 2026. Ferry schedules, trail access, and rental requirements change. This is general information, not travel advice — see terms. Corrections via contact.