2026/08/07
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Jeju is just over an hour from Seoul by air, which makes it dangerously easy to underplan. Most first-time visitors block out three nights and leave wishing they had booked five.
The island reads as compact on a map. It is roughly 70 kilometres from the eastern tip to the western tip, with a 1,947-metre volcano rising out of the middle of it, and the drive from one coast to the other alone runs over an hour and twenty minutes.
This guide covers how long to give it, when to come, how to move around, and the one piece of paperwork that ruins more foreign visitors' trips than anything else.
Seoul to Jeju — Faster Than You Think
The flight from Gimpo Airport (GMP) to Jeju International Airport (CJU) runs about one hour and fifteen minutes. Budget carriers — Jin Air, Jeju Air, T'way Air, Eastar Jet, and Air Seoul among them — operate dozens of daily departures on what is one of the busiest air routes in the world.
Fares swing hard with the calendar. Off-peak round trips can dip into the 50,000–80,000 won range, while a Friday evening departure in high season clears 100,000 won without difficulty.
Book a Tuesday or Wednesday departure, at least a month out. That combination reliably finds the softest prices on any Korean domestic route.
The alternative is the ferry from Mokpo or Wando on the south coast, taking roughly four to five hours to Jeju Port. It makes sense if you are bringing a car across from the mainland. For a tight itinerary it is hard to justify the hours.
How Many Days Does Jeju Actually Take?
Three nights covers the essentials, if you are disciplined about it. Build in a full day for Hallasan if you want the summit, a half day minimum for Seongsan Ilchulbong and the island of Udo, and accept that you will not be doing the east and west coasts well on the same day.
Four nights is the more comfortable standard, and it divides cleanly:
- Day 1 — arrive, settle into Jeju City or the east coast, eat black pork
- Day 2 — Hallasan (all of it)
- Day 3 — east coast: Seongsan Ilchulbong at sunrise, then Udo
- Day 4 — west coast: beaches, an oreum, cafés along the coastal road
- Day 5 — a slow morning, then fly
If your trip is nature-first — craters, coastal walks, mountain trails — four nights works. If you are splitting time between landscapes and the island's café and design scene, budget five.
Hallasan — the Volcano at the Centre of Everything
한라산 (Hallasan, 1,947 m) is the highest mountain in South Korea and a UNESCO World Natural Heritage site. It is also the reason Jeju exists at all: the entire island is what the volcano built, and Hallasan is the still-visible core of it.
Two trails reach the summit crater, 백록담 (Baengnokdam, White Deer Lake).
| Trail | One way | Round trip | Reservation |
|---|---|---|---|
| 성판악 Seongpanak | 9.6 km | 8–10 hrs | Required |
| 관음사 Gwaneumsa | 8.7 km | 7–9 hrs | Required |
| 영실 Yeongsil (to Witseoreum, not the summit) | ~3.7 km | 3–5 hrs | Not required |
Both summit routes require an advance booking through the Hallasan National Park reservation system. There is no fee, but without a reservation you will not be allowed past the gate — and the daily quota fills in high season.
If the summit is too much, the 영실 코스 (Yeongsil Trail) up to 윗세오름 (Witseoreum) deserves serious consideration rather than being treated as a consolation prize. Far less climbing, no booking required, and a ridgeline that opens onto volcanic rock formations and bracken-covered slopes.
Winter turns Hallasan into a different mountain entirely. It also makes crampons non-negotiable — rangers check at the entry point and will turn back hikers without them.
Seongsan Ilchulbong and Udo — a Full Day on the East Coast
성산일출봉 (Seongsan Ilchulbong), Sunrise Peak, rises straight out of the eastern shore. It formed roughly 5,000 years ago in a shallow underwater eruption, leaving a tuff crater with a wide green bowl at the top and cliffs dropping to the water on three sides.
The climb is moderate: 40 to 50 minutes round trip on a paved and stepped path. Adult admission is 5,000 won, youth and children 2,500 won.
Two things the brochures bury. The ticket office opens at 7 a.m., so anyone who walks up before then gets in free — which makes the sunrise climb both the best version of the visit and the cheapest.
The second is that the site closes on the first Monday of every month. That one has caught out a lot of people with a fixed itinerary.
From the dock below, a ferry reaches 우도 (Udo, Cow Island) in about 15 minutes. Bring your passport — Korean coastal ferries require photo ID at the ticket window, and a phone photo of your passport will not do it.
Udo is small, flat, and built for a slow circuit: white coral sand beaches, a lighthouse you can walk to, 땅콩 아이스크림 (peanut ice cream) at every other stall, and a coastal road that takes about two hours by bicycle or electric scooter.
Rent at the ferry dock and ride counter-clockwise — the eastern cliffs hold the best light in the morning.
Half a day disappears there without any effort at all.
Oreum — Jeju's 360 Volcanic Hills
오름 (oreum) are parasitic cinder cones: small volcanic hills thrown up around Hallasan's flanks during secondary eruptions. Jeju has more than 360 of them.
There is no clean English translation, which is why nobody bothers. After a day on the island you will be saying oreum without thinking about it.
Most take 30 to 40 minutes to climb and open onto a full circle of fields, coastline, and the volcano in the distance. Almost all of them are free.
다랑쉬오름 (Darangswi Oreum) in the east is the classic shape — a near-perfect cone with a deep crater at the top. 새별오름 (Saebyeol Oreum) on the western side is the one people photograph in autumn, when silver grass covers the slopes through September and October and catches the late light.
The thing that surprised me most was how little ceremony surrounds them. An oreum is not a landmark you queue for. It is where someone from the next village walks their dog before dinner, and on a weekday afternoon you may well have the crater to yourself.
Haenyeo — the Women Who Dive Without Tanks
해녀 (haenyeo, sea women) free-dive to depths of 10 to 20 metres to harvest abalone, sea urchin, and conch, using no equipment beyond a wetsuit and a trained breath-hold. The practice goes back centuries. UNESCO added it to the Intangible Cultural Heritage of Humanity list in 2016.
The numbers explain why seeing it now matters. Jeju Province counted 2,371 active haenyeo at the end of 2025, down 252 from the year before. In the 1970s there were around 14,000.
Roughly 63 percent of the divers still working are over seventy. New entrants run to a few dozen a year, against annual losses in the hundreds.
You are more likely to encounter haenyeo at a working harbour than at a scheduled performance. The shoreline around 종달리 (Jongdal-ri) and 하도리 (Hado-ri) in the east is a reasonable bet, and the Haenyeo Museum in 구좌 (Gujwa) is the reliable option if you would rather not leave it to chance.
After a dive, divers often sell straight off the dock — a bucket of live sea urchin, a few abalone, sometimes sea cucumber. 성게알 (seonggye-al, sea urchin roe) spooned out at the waterside, with the wind off the strait still in it, is not a restaurant experience and does not pretend to be one.
Getting Around — and the Paperwork That Trips People Up
Buses connect Jeju's major sites. Seongsan Ilchulbong, Hyeopjae Beach, the Hallasan trailheads, and the airport area are all reachable without a car. What disappears without one is the ability to stop at a roadside oreum, follow a coastal road on instinct, or reach a harbour at six in the morning.
Rental agencies cluster at the airport exit, roads are well signed, and the ring road is one of the better drives in Korea.
Then there is the licence problem, and it is worth reading twice.
South Korea recognises only the International Driving Permit issued under the 1949 Geneva Convention. If your IDP was issued under the 1968 Vienna Convention instead — as it is in Germany, France, and several other countries — rental desks will refuse it. Travellers get turned away at the counter in Jeju every week over exactly this.
A few more rules that catch people out:
- The IDP must be obtained in your home country before you travel. It cannot be issued in Korea and cannot be emailed to you.
- You must carry your original home licence and the IDP and your passport whenever you drive.
- Licences from China, Indonesia, and Taiwan are not accepted for rental in South Korea.
If driving is out, the taxi option is better than it used to be. The 카카오 T (Kakao T) app now runs fully in English, Japanese, and Chinese, and it passes your destination to the driver in Korean automatically.
Kakao Mobility also runs k.ride, a separate app built for international visitors that works without a Korean phone number or bank card.
Budget roughly 60,000 won a day in taxi fares if you are making multiple stops across the island — less if you are staying in one region.
When to Go — Jeju by Season
| Season | What you get | What to watch |
|---|---|---|
| Spring Mar–May | Canola fields and cherry blossom across the island | Books out early — reserve flights and rooms well ahead |
| Summer Jul–Aug | Warm water, beach weather, Hallasan at full green | Highest fares of the year; heat and humidity are serious |
| Autumn Sep–Nov | Silver grass on the oreum, best hiking conditions | October is the busiest domestic travel month |
| Winter Dec–Feb | Snow on Hallasan, empty roads, lowest prices | Storms off the Yellow Sea ground flights with little warning |
Spring and autumn are the consensus picks, and the consensus is right. Spring puts canola in the flatlands and blossom along the roadsides. Autumn puts silver grass on the oreum and colour on the Hallasan ridgeline.
Winter is the underrated one. Domestic tourists thin out, prices drop sharply, and a snow-covered Hallasan is one of the more striking landscapes in East Asia. The trade-off is real, though — a winter storm can cancel your flight and take a full night of your itinerary with it.
What to Eat on Jeju
Jeju spent centuries feeding itself from volcanic soil and cold coastal water, far enough from the mainland to develop its own logic about food. Three dishes carry that.
흑돼지 구이 (heukdwaeji gui, black pork barbecue). Jeju's indigenous black pigs have a different fat structure from standard Korean pork belly — thicker skin, darker meat, a noticeably richer flavour. It is grilled over charcoal, skin side down first, and cut thick.
The dense concentration is 흑돼지거리 (Black Pork Street) in 건입동 (Geonip-dong), Jeju City — a fifty-metre alley of specialists that has been there about thirty years. 연동 (Yeon-dong) and 노형동 (Nohyeong-dong) have plenty more. Most places will not serve a single portion, so solo travellers should expect to order two.
고등어회 (godeungeo hoe, raw mackerel). Mackerel spoils fast, which is why most of the world cooks, cures, or cans it. Jeju eats it raw, sliced to order, wrapped in perilla leaf with garlic and 된장 (doenjang, fermented soybean paste).
동문시장 (Dongmun Market) in Jeju City is where to try it — the island's main traditional market, with a row of restaurants that handle mackerel and winter yellowtail all day and well past midnight. Freshness is the entire dish here; there is no sauce complicated enough to cover for it.
한라봉 (Hallabong). A Jeju citrus named for the bump at its stem, which looks like the summit of Hallasan.
Buy it at a traditional market or a roadside stand rather than a convenience store. Prices move with the season and the grade, and the roadside boxes are both cheaper and better — sweeter and more fragrant than the same fruit trucked to Seoul.
Practical Information at a Glance
| Detail | What to know |
|---|---|
| Seoul to Jeju flight | Gimpo (GMP) to Jeju (CJU), approx. 1 hr 15 min |
| Airfare range | Off-peak round trip 50,000–80,000 won; peak season over 100,000 won |
| Airlines | Jin Air, Jeju Air, T'way Air, Eastar Jet, Air Seoul |
| Seongsan Ilchulbong | Adults 5,000 won / youth & children 2,500 won / free before 7 a.m. |
| Seongsan closing day | Closed the first Monday of every month |
| Hallasan summit trails | Free, but advance reservation required (Hallasan National Park system) |
| Hallasan round trip | Seongpanak 8–10 hrs / Gwaneumsa 7–9 hrs / Yeongsil to Witseoreum 3–5 hrs |
| Oreum access | Free at almost all sites |
| Udo ferry | Approx. 15 min from Seongsan — photo ID required to board |
| Driving | 1949 Geneva Convention IDP only; carry IDP + home licence + passport |
| Taxi alternative | Kakao T (English supported) or k.ride; approx. 60,000 won/day |
| Airport to Jeju City | Bus approx. 20 min / taxi 10–15 min |
| Recommended stay | Minimum 3 nights / ideal 4–5 nights |
| Best seasons | Spring (Mar–May) or autumn (Sep–Nov) |
Jeju sits inside Korea's borders and belongs to a different register entirely. The pace is slower, the horizon is lower, and the wind — off the strait, up the volcanic slopes, across the oreum grass — arrives from directions Seoul does not have.
People who come once tend to come back. Not because they missed something the first time, but because the island has a way of making what they did see feel worth returning to.
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