Jeju Island (제주도) is Korea's Hawaii — a volcanic island 90 minutes' flight from Seoul, with dramatic coastal cliffs, lava tube caves, a UNESCO-listed mountain, black sand beaches, and a food culture distinct from the mainland. It's the most visited domestic destination in Korea and one of the most beautiful places in East Asia. Here's how to do it in a weekend without wasting time.

Getting There

By air: The Seoul–Jeju route is the world's busiest air corridor. Jeju Air, Air Busan, Jin Air, and Eastar Jet run dozens of flights daily from Gimpo Airport (GMP) — closer to central Seoul than Incheon. Flight time: 55–70 minutes. Price: ₩35,000–₩120,000 each way depending on when you book and which carrier. Book at least 3–4 weeks ahead for weekend travel; prices spike dramatically within 2 weeks of departure.

Tip: Fly from Gimpo (김포공항, Line 5 and 9), not Incheon. Gimpo is 30 minutes from most of Seoul vs. 60+ minutes for Incheon, and the Seoul–Jeju LCC flights mostly operate from Gimpo. Check both airports when searching — occasionally Incheon has cheaper fares.

By ferry: An overnight ferry runs from Mokpo (3 hours from Seoul by KTX) to Jeju in about 5.5 hours. Romantic option, significantly slower, primarily useful if you're doing a broader southwest Korea trip.

Getting Around Jeju

Jeju has limited public transport compared to Seoul. Your realistic options:

Rental car — The standard choice and highly recommended. Jeju's beauty is largely coastal and rural; a car lets you stop at viewpoints, beaches, and villages that buses don't reach. International driving permits (IDL) are accepted. Rental costs: ₩30,000–₩70,000/day for a compact. Kakao Mobility and Lotte Rent-a-Car have reliable English booking.
Scooter rental — Popular for solo travellers; ₩30,000–₩50,000/day. Requires a motorbike license for 125cc+ bikes; check your license category.
Bus + taxi — Intercity buses run between Jeju City, Seogwipo, and major tourist sites. Sufficient for the main attractions but significantly slower and less flexible than a car.

The Essential Itinerary: 2 Days

Day 1: The East Coast & Interior

성산일출봉 (Seongsan Ilchulbong) — Sunrise Peak, a 182m volcanic crater rising from the sea; best visited at sunrise (obviously) or late afternoon when tour buses have left. UNESCO World Heritage Site. Entry ₩2,000.
섭지코지 (Seopjikoji) — A dramatic coastal promontory with black lava rock formations, grass fields, and a lighthouse. 20 minutes from Seongsan. Free.
만장굴 (Manjanggul Lava Tube) — One of the world's longest and most accessible lava tubes; 1km open to visitors. Otherworldly — constant cool temperature even in summer. Entry ₩4,000.
Jeju City for dinner — 흑돼지 (black pork) barbecue is Jeju's signature meal; the pigs are a local breed distinct from mainland Korean pork, noticeably richer in flavour. Dongmun Market area has concentrated options.

Day 2: The South Coast & Hallasan

한라산 (Hallasan Mountain) — Korea's highest peak (1,950m), a dormant volcano and UNESCO Biosphere Reserve. Multiple trails; the Eorimok trail (4.7km each way) is the most accessible and doesn't require the summit permit needed for the Seongpanak/Gwaneumsa trails. Start early — the park closes based on safety conditions and distance from closing time.
천지연 폭포 (Cheonjiyeon Waterfall) — 22m waterfall in Seogwipo; particularly dramatic after rain. The surrounding botanical garden area is also worth the short walk.
주상절리 (Jusangjeolli Cliffs) — Hexagonal basalt columns rising from the sea near Seogwipo; the geology is extraordinary and best understood when you consider they were formed by lava meeting seawater. Entry ₩2,000.

What to Eat on Jeju

흑돼지 구이 (black pork BBQ) — mandatory; richer and more marbled than mainland pork
옥돔구이 (grilled red tilefish) — Jeju's signature fish; delicate, clean flavour; best at Dongmun Market
해녀 음식 (haenyeo food) — the haenyeo are Jeju's famous female divers; restaurants near diving areas serve their daily catch as raw seafood, sea urchin, and abalone
한라봉 (Hallabong orange) — Jeju's famous citrus variety; larger and sweeter than regular oranges; eat them fresh or drink the fresh-pressed juice from roadside stands

Budget for a Weekend

Flights (round trip): ₩70,000–₩120,000 | Accommodation (guesthouse): ₩30,000–₩60,000/night | Car rental: ₩60,000–₩140,000 for 2 days | Food: ₩50,000–₩80,000/day | Entry fees: ~₩15,000 total

Total realistic budget: ₩280,000–₩500,000 per person for a full weekend. Jeju is one of the best value destinations for a two-day trip anywhere in East Asia.

Seoul to Jeju Island: Planning the Perfect Weekend Trip