Seongsan Ilchulbong, Jeju Island

No. 15 25 Great Islands to Visit 2026

Jeju Island

Jeju Province, South Korea

Korea's volcanic island of craters, lava tubes, waterfalls and the haenyeo sea divers.

Photo: Bernard Gagnon, CC0, via Wikimedia Commons

Overview

Jeju is South Korea's largest island, about 80 km off the south coast. Its volcanic landscape, with Hallasan mountain, craters and lava tubes, is listed by UNESCO as Jeju Volcanic Island and Lava Tubes.

It is a favourite holiday island in Korea, with beaches, coastal walks on the Jeju Olle trails and a strong local culture, including the women divers known as haenyeo.

Best time to visit

April to June and September to November are most pleasant. Summer is hot and humid with a rainy spell; typhoons are possible in late summer.

Highlights

  • 1

    Seongsan Ilchulbong

    A tuff cone rising from the sea, famous at sunrise.

  • 2

    Hallasan

    South Korea's highest mountain; some trails need advance reservation.

  • 3

    Manjanggul Cave

    A long lava tube open to visitors.

  • 4

    Jeju Olle trails

    Coastal walking routes around the island.

  • 5

    Cheonjiyeon and Jeongbang waterfalls

    Waterfalls near Seogwipo, Jeongbang falling directly into the sea.

Getting there

Jeju International Airport has frequent flights from Seoul and other Korean cities, and some international routes. Ferries run from mainland ports.

Practical tips

Opening & tickets
Opening times, ticket rules and transport timetables change, so check official information before you go.
Time needed
Three to five days.

Official information: Visit Jeju (official website). Check opening hours, prices and entry rules there before you go.

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