Jeju Island operates a special visa-free policy for many nationalities. Travelers from over 100 countries — including most of Europe, North America, Australia, and Southeast Asia — can enter Jeju Island without a visa for stays of up to 30 days, provided they do not travel to mainland South Korea. This makes Jeju one of the most accessible island destinations in East Asia for international visitors. Travelers should verify the current visa policy with South Korean immigration authorities before departure, as conditions may change.

South Korea uses the Korean Won, but for international travelers planning budgets, most goods and services on Jeju Island align with mid-range global pricing. A decent guesthouse or pension typically runs between USD 40–80 per night, while mid-range hotels average USD 100–180. Meals at local restaurants generally cost USD 6–15 per person. Entry to major natural attractions is often low-cost or free, with some hiking permits and nature reserves charging USD 1–3 per adult.

Credit cards are widely accepted across Jeju Island, and international ATMs are available at the airport, convenience stores (CU, GS25), and major hotels.

Renting a car is by far the most practical way to explore Jeju Island's natural sites, many of which are spread across rural or semi-remote areas with limited public transport. International travelers can rent a compact vehicle for approximately USD 35–70 per day depending on the season. An International Driving Permit is required. Alternatively, scooter rentals are popular during warmer months and cost around USD 25–40 per day.

Public buses do connect major attractions, but schedules can be infrequent. Taxi services, including Kakao Taxi (available in English), are reliable in more populated areas.

Four main trails lead toward the summit area, each varying in difficulty and scenery:

Seongpanak Trail is the longest route at approximately 9.6 kilometers one way, passing through dense temperate forests of oak and maple trees. This trail is the only route that reaches Baekrokdam, the spectacular crater lake at the summit. The round trip typically takes 8–9 hours.

Gwaneumsa Trail is considered the most scenic and challenging route, at 8.7 kilometers one way. It passes through ancient forest, rocky ridgelines, and dramatic valleys. The round trip takes approximately 8 hours.

Eorimok Trail (6.8 km round trip) and Yeongsil Trail (5.8 km round trip) are shorter options that reach impressive mid-mountain panoramas without ascending to the crater. These are better suited to travelers with limited time or fitness levels.

Park authorities impose strict time-of-entry cutoffs depending on the season. Hikers attempting the summit trails must begin before 12:00 PM (noon) on most days. Reservations are now required via the Hallasan National Park official reservation system, and a limited number of daily visitors are permitted on the summit-bound trails. Entry to the trails is free, though parking costs approximately USD 1–2.

Hallasan National Park is a UNESCO-listed biosphere reserve. The mountain supports five distinct vegetation zones, from subtropical forest at its base to alpine meadows near the crater rim. In late spring (May–June), royal azaleas paint the upper slopes in vivid pink and purple. In autumn (October–November), the foliage transforms into brilliant reds and oranges, making this one of the most visually dramatic seasons to visit.

Wide-eyed Jeju ponies — a native, sturdy breed that has roamed the island for centuries — can sometimes be spotted grazing in pastoral fields on the mountain's lower slopes. Roe deer and diverse birdlife also inhabit the national park.

Located on the southwestern coast near Jungmun, Jusangjeolli Cliff is one of the most photographed natural formations on the island. The cliff is composed of hexagonal basalt columns — formed when lava cooled rapidly upon meeting the sea — stacked tightly together like a natural organ pipe structure. The columns rise up to 25 meters above the waterline and stretch along the coast for several hundred meters.

The site is accessible from a well-maintained viewing platform and walking path, and entry costs approximately USD 2 per adult. The best time to visit is late afternoon when the golden hour light catches the dark columns against the crashing waves.

On the western coast, Hyeopjae Beach is widely considered one of the most beautiful beaches on Jeju Island. The shallow turquoise water contrasts with white coral sand — unusually bright due to the island's volcanic rock filtering the water — and the panoramic view toward Biyangdo Island makes for a quintessential Jeju seascape.

Biyangdo is a small volcanic island a short ferry ride from Hyeopjae port (approximately USD 8–10 round trip). The island features a small crater lake, coastal walking trails, and a population of only a few dozen permanent residents. Visiting Biyangdo is an excellent half-day excursion for travelers seeking to experience remote jeju island nature without strenuous effort.

Manjanggul Lava Tube, located in the northeastern part of the island, is one of the longest lava tubes in the world at over 13 kilometers in total length. Approximately 1 kilometer of the tube is open to the public and lit with atmospheric lighting that highlights the alien geological formations within. Visitors walk along the original lava floor, past towering lava columns and ancient flow marks frozen into the rock walls.

Entry costs approximately USD 4 per adult. The interior temperature stays at around 11°C year-round, so a light jacket is advisable regardless of the season. The lava tube experience is one of the most unique jeju island underground attractions available to international visitors.

Jeju Island has several notable waterfalls, but Cheonjiyeon and Jeongbang Waterfalls near Seogwipo City are the most frequently visited.

Jeongbang Waterfall is one of the only waterfalls in Asia that falls directly into the ocean, plunging 23 meters from a basalt cliff face into the sea. The viewing area is accessed via a short staircase, and the experience of standing at the base — with the ocean spray and the sound of rushing water — is memorable. Entry costs approximately USD 2.

Cheonjiyeon Waterfall flows through a lush subtropical valley and drops 22 meters into a clear pool below. The surrounding forest is home to the endangered endemic species Nycticorax nycticorax (black-crowned night heron). A short forested walkway leads to the falls, and the approach through the valley is serene and photogenic. Entry costs approximately USD 2.

The Jeju Olle Trail is a network of 26 hiking routes encircling the entire island, totaling approximately 437 kilometers. Each numbered course runs between 6 and 20 kilometers and passes through a distinct combination of coastal paths, forest tracks, village lanes, and open farmland.

For international travelers new to the Olle Trail system, Course 7 (Oedolgae Coast Course) is a popular starting point, offering dramatic sea cliff views, the iconic Oedolgae Rock (a 20-meter volcanic monolith rising from the sea), and relatively easy terrain. Course 1, which begins in Seongsan village near Seongsan Ilchulbong, is another excellent choice for travelers wanting to combine the trail with a sunrise viewing experience.

Trail maps are available in English at the Jeju Olle Trail Center and through the official Jeju Olle website and mobile app.

Seongsan Ilchulbong, or Sunrise Peak, is a UNESCO World Heritage tuff cone that rises 182 meters above sea level on Jeju Island's eastern tip. Formed approximately 5,000 years ago by a hydro-volcanic eruption, the crater at the summit is roughly 600 meters in diameter and filled with lush green vegetation.

The sunrise experience from the summit is considered among the most spectacular in South Korea, drawing visitors who begin the 30-minute uphill climb in darkness to reach the top before dawn. Entry to Seongsan Ilchulbong costs approximately USD 2 per adult. For a different perspective, boat tours around the base of the rock formation depart from a nearby pier.

Jeju Island is a year-round destination, but each season offers a distinct character:

• Spring (March–May): Cherry blossoms and yellow canola fields blanket the island in color. Hallasan's azalea season peaks in late May. Crowds begin to increase from April onward.
• Summer (June–August): Warm, humid weather with lush green landscapes. Beaches are at their best. Typhoon risk exists in July and August.
• Autumn (September–November): Arguably the finest season for hiking and nature. Hallasan's autumn foliage is exceptional. Crowds are generally moderate.
• Winter (December–February): Hallasan often receives snow, creating a stark and beautiful landscape. Lower tourist numbers and reduced accommodation rates. Some higher trails may be closed due to ice.

For any significant hiking on Jeju Island — particularly Hallasan — travelers should pack:

• Layered clothing suitable for rapidly changing mountain weather
• Waterproof outer layer
• Sturdy hiking shoes or trail runners
• Sufficient water and trail snacks (vendors are not present on summit trails)
• Sun protection (hat, sunscreen, UV-rated clothing)
• A portable battery for phones used for navigation

Jeju Island's extraordinary natural environments are increasingly under pressure from high visitor numbers. Travelers are encouraged to adhere to established trail paths, avoid removing any plant or geological material, carry out all waste, and book accommodations and tours with operators certified under South Korea's eco-tourism programs. Respecting designated rest areas for wildlife, particularly during nesting seasons near coastal cliffs, is also essential.

Seogwipo City on the southern coast serves as an excellent base for accessing Hallasan's southern trails, Jusangjeolli Cliff, Cheonjiyeon Waterfall, and the Olle Trail southern courses. Jeju City on the northern coast provides easier access to Manjanggul Lava Tube, Hyeopjae Beach, and the airport. For travelers prioritizing the eastern coastal scenery and Seongsan Ilchulbong, guesthouses and boutique pensions in Seongsan village offer convenient early morning access to Sunrise Peak.