Jeju Island is Korea's undisputed #1 domestic destination — and one of Northeast Asia's most rewarding island getaways for international visitors. Four days is the sweet spot: Seongsan's UNESCO volcanic crater, the car-free island of Udo, Hallasan's alpine trails, and Jeju's emerald west coast all fit without rushing. Built with Tripop AI, verified for 2026.
Why 4 days?
Jeju is 1 hour by air from Seoul — but the island stretches 73km east-west. Seongsan (east) and Hyeopjae (west) are 75km apart. Without a car, you simply can't do both in one day. The 4-day structure:
- Day 1 (arrival): Dongmun + Hamdeok
- Day 2: Seongsan + Udo + Seopjikoji
- Day 3: Hallasan + Manjanggul
- Day 4 (departure): Hyeopjae + airport
Two days means dropping either Hallasan or Seongsan. Five days adds Olle trail hiking, sea kayaking, or horse riding — but the four core highlights fit comfortably in 3 nights.
Before You Go — Car, Flights, SIM
Rental Car (Most Important)
Jeju's public buses run hourly at best. A rental car turns the whole island into a single day's reach.
| Item | Details |
|---|---|
| Where to pick up | Jeju Airport 1F rental car counters (15+ companies) |
| Price | Compact ₩50,000-80,000/day, midsize ₩80,000-120,000/day |
| International visitors | IDP + home country license both required |
| Insurance | Full coverage (comprehensive + liability) strongly recommended, adds ₩10,000-20,000/day |
| Booking tip | Book online 1-2 weeks ahead — peak season (Jul-Aug) prices double |
Flights
Seoul (GMP/ICN) → Jeju (CJU): 1 hour. Round trip ₩80,000-150,000 on LCC carriers (Jeju Air, Air Seoul, T'way). Book at least 2 weeks ahead — popular routes sell out.
From Japan: Osaka/Tokyo/Fukuoka direct to Jeju, ~2 hours. From China: multiple direct routes. From Southeast Asia: connect via Seoul.
SIM / Data
Buy at Jeju Airport arrival hall (all major carriers). Data SIM ₩15,000-25,000 for 5-7 days unlimited. eSIM options available for compatible phones.
Day 1 — Dongmun Market + Hamdeok Beach
| Time | Activity | Notes |
|---|---|---|
| 11:00 | Jeju Airport arrival + rental car | Allow 30-40 min for car pickup |
| 12:30 | Dongmun Market lunch | Black pork, hairtail stew, seafood |
| 15:00 | Hamdeok Beach | Emerald water, shower facilities |
| 17:30 | Hamdeok café strip | Sunset + coffee |
| 19:00 | Black pork dinner | ₩20,000-30,000 per person |
Day 1 tip — Dongmun Market is Jeju's most authentic traditional market. The 2nd-floor food hall offers hairtail stew (set meal ₩15,000-20,000/person), while the ground floor is good for Jeju tangerine chocolate and souvenirs. Hamdeok is 15 minutes east of Jeju City — one of the most photogenic beaches on the north coast, with calm water even in summer.
Jeju's native black pork (heukdon) has distinctly richer flavor and softer texture than standard pork. Thick samgyeopsal (pork belly) around 200g runs ₩20,000-30,000/person. The local way: dip in mel-jeot (salted fermented anchovies). Pair with Hallasan soju (₩2,500 for 350mL). Best near Dongmun Market or Jeju City restaurant streets.
Day 2 — Seongsan Sunrise Peak + Udo Island + Seopjikoji
| Time | Activity | Notes |
|---|---|---|
| 04:30 | Seongsan Sunrise Peak (May-Aug) | ₩5,000, opens 04:30 |
| 08:00 | Seongsan Port → Udo ferry | ₩10,500 round trip, 15-20 min |
| 09:00 | Rent e-scooter on Udo | ₩35,000-45,000/day, IDP required |
| 10:30 | Coral Beach + Geommeolle Beach | Udo's two showpieces |
| 12:30 | Lunch on Udo | Peanut makgeolli, seafood bowl |
| 14:30 | Return ferry to Seongsan | |
| 15:30 | Seopjikoji | No entry fee, wind + cliff views |
| 19:00 | Black pork or seafood dinner |
Day 2 tips:
Seongsan Sunrise Peak — UNESCO World Natural Heritage site. The crater was formed 100,000 years ago by a single undersea eruption. Summit hike is about 30 minutes (steep but manageable). For sunrise (May-Aug): arrive by 05:00, sunrise around 05:20-05:50. The ₩5,000 entrance fee is among the best value in Korea.
Udo Island — Jeju's most famous offshore island. Key rule: rental cars from the mainland cannot board the ferry. Park at Seongsan terminal, take the ferry, then rent a local electric scooter or e-bike on Udo (IDP required). Last ferry back is around 17:00 — don't miss it.
Seopjikoji — A wind-swept promontory 5 minutes from Seongsan. No admission fee. Famous as a filming location, the basalt cliff walk with lighthouse views is worth 45 minutes.
Adults ₩5,000, youth/children ₩2,500. May-Aug opens 04:30 (sunrise possible), Nov-Feb 06:00-18:00. 30-min summit hike. UNESCO World Natural Heritage. The crater floor has paddy fields — uniquely surreal. Park at Seongsan Ilchulbong parking lot (₩2,000/2h).
Read more
Day 3 — Hallasan Yeongsil Trail + Manjanggul Lava Tube
| Time | Activity | Notes |
|---|---|---|
| 07:30 | Depart Yeongsil trailhead | Free parking, no reservation |
| 09:30 | Reach Witse Oreum (1,700m) | Views of Hallasan summit |
| 11:30 | Back at trailhead | Total ~4-5 hours |
| 13:00 | Lunch | Jeju City area |
| 15:00 | Arrive Manjanggul | ₩4,000, 09:00-18:00 |
| 16:30 | Exit Manjanggul | |
| 18:30 | Jeju City or Aewol café street | Sunset + dinner |
Day 3 tips:
Hallasan Trail Options:
- Yeongsil course (4-5h round trip): Recommended for this itinerary. No reservation, free. Yeongsil trailhead → Byeongpungbawi (cliff wall) → Witse Oreum (1,700m). Famous for pink azaleas in May and red foliage in October.
- Summit Baengnokdam (8-9h via Seongpanak): Requires advance online reservation at visithalla.jeju.go.kr (opens 1st of each month for the following month). Strong fitness needed.
Manjanggul Lava Tube — One of the world's longest lava tube systems at 7.4km total (1km open to visitors). Constant 9-11°C inside — bring a layer even in summer. The 7.6m lava column near the end is the world's largest. Closed the first Wednesday of each month; last entry 17:10.
Hallasan (1,947m) is Korea's highest mountain. Yeongsil course: 4-5h round trip, free, no reservation needed. Yeongsil trailhead → Byeongpungbawi basalt cliff wall → Witse Oreum (1,700m). May azaleas, October foliage, winter snow are all spectacular. Start before 08:00 for comfortable timing.
Read moreAdults ₩4,000, children ₩2,000. Open 09:00-18:00, last entry 17:10. Closed first Wednesday each month. 1km open section of a 7.4km total tube. Inside temperature 9-11°C year-round — bring a jacket. The 7.6m lava column near the end is the world's largest. UNESCO World Natural Heritage.
Read moreDay 4 (departure) — Hyeopjae Beach + Airport
| Time | Activity | Notes |
|---|---|---|
| 09:00 | Hyeopjae Beach | Jeju's most-emerald water |
| 10:30 | Hallim Park (optional) | ₩12,000, 1 hour |
| 12:00 | Lunch, Jeju City | |
| 14:00 | Return rental car + airport | Allow 30 min for car return + shuttle |
| 16:00+ | Departure |
Day 4 tip — Hyeopjae is on the west coast, 35 minutes from Jeju City by car. The water color here — shallow, crystal clear with white sand and Biyangdo Island in the background — is the most photographed in Jeju. Morning light before 10:00 gives the best color.
Budget Summary (per person, excluding international flights)
| Item | Cost |
|---|---|
| Rental car 3 days | ₩150,000-350,000 |
| Accommodation 3 nights | ₩240,000-450,000 |
| Attractions | ₩30,000-40,000 |
| Food | ₩80,000-150,000 |
| Subtotal | ₩500,000-1,000,000 (~$370-740) |
| Seoul-Jeju domestic flight | ₩80,000-150,000 |
| Total per person | ₩580,000-1,150,000 |
Jeju Must-Do List
Jeju's native black pig produces noticeably richer pork. Thick samgyeopsal (pork belly) ₩20,000-30,000/person. Dip in mel-jeot (salted anchovies). Best around Dongmun Market or Jeju City streets.
₩5,000 adults. May-Aug opens 04:30 for sunrise. UNESCO World Natural Heritage. 30-min summit hike. A 100,000-year-old underwater volcanic eruption made this crater — with paddy fields growing inside it today.
Read more₩10,500 round-trip ferry from Seongsan (15-20 min). No rental cars allowed on island. Rent e-scooter locally (IDP required, ₩35,000-45,000/day). Coral Beach (crushed coral sand), Geommeolle Beach (basalt cliffs), Hagosudong. Last ferry ~17:00.
Read moreFree, no reservation. Yeongsil trailhead → Witse Oreum (1,700m), 4-5h round trip. May azaleas and October foliage are among Korea's best alpine scenery. Bring water and layers — summit area is cold even in summer.
Read moreJeju's fishing heritage on a plate. Hairtail stew set ₩15,000-20,000 at Dongmun Market food hall. Whole 1m+ hairtail braised in chili sauce. Raw mackerel (goodeogi-hoe) reaches peak freshness here — only possible this close to source.
Wrap-Up
- Jeju 4-day = Seongsan + Udo + Hallasan + Hyeopjae — four experiences that can't be replicated anywhere else in Korea
- Rental car is non-negotiable — book 1-2 weeks ahead, 1+ month for peak season
- 2026 key facts: Seongsan ₩5,000, Hallasan summit requires advance reservation, Udo ferry ₩10,500
- Tripop AI builds the skeleton itinerary in 1 minute, then organizes flight and rental car confirmations into a single trip view
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Photos: Pexels (Coman Yu — Jeju coast, nana liu — Jeju beach, Gyubeen Hong — Jeju sea, Dasha Klimova — Seongsan summit view, Kharl Anthony Paica — Jeju waterfall, 하준 오 — Hallasan snow) — Pexels License.