Why Skip the Car
Most Jeju advice assumes a rental car, and there's a reason: the island is 73 km east-west and 31 km north-south, with a 258 km coastline and a road network whose main routes total 181 km. That's real distance to cover. But a car isn't the only way to see it, and for some visitors it isn't an option at all — Korea only accepts driving licences from a specific list of countries and requires an International Driving Permit that matches, so if yours isn't covered, you're taking buses, taxis, a bike, or your own two feet whether you planned to or not. Here's what's actually verifiable about doing that.
Arriving: Jeju International Airport (제주국제공항)
Jeju International Airport (제주국제공항), IATA code CJU, is the island's only airport and Korea's second-busiest after Incheon, handling around 29 million passengers in 2023 against a design capacity of 26 million. It was built in 1968, has two runways, and is the home base for Jeju Air, Eastar Jet, and Jin Air. The Seoul–Jeju route flying into it is routinely ranked the busiest single airline route in the world, so expect crowds, especially around domestic departures.
For getting into town, the airport's own site (airport.co.kr/jeju) gives gate-level directions rather than a route map:
- City and intercity buses board just outside Gate 2.
- Taxis queue across the crosswalk from Gate 3.
- The airport limousine bus boards about 10 meters to the right of Gate 5.
The airport also has duty-free shopping, real-time parking status boards, and accessibility services for passengers with reduced mobility, per its own site. I could not confirm the exact travel time or distance from the airport into Jeju City or Seogwipo, or specific limousine bus route numbers and fares — the airport site doesn't publish them and I couldn't find a working official source that does.
The Bus Network — What's Confirmed and What Isn't
There is a genuine intercity bus network connecting Jeju City with Seogwipo and other points around the island — published route data indicates plainly that "a bus ride from Jeju City to Seogwipo, the second-largest city on the island, is typically an hour." That one hour crossing is the most concrete timing fact I could verify for island-wide bus travel.
Beyond that, I have to be honest about the gaps: I could not confirm the route numbering scheme (whether express/intercity routes use a distinct number range from local city routes), current fares, or whether T-money or other rebateable transit cards are accepted on Jeju's buses. Jeju's own transportation site (bus.jeju.go.kr) wouldn't load over a verified connection during research, and the general Jeju provincial and tourism sites returned bare navigation shells with no route content. If the bus network matters to your plans, confirm current numbers and fares at the airport's tourist information counter or a bus stop display when you land — don't rely on a route number from an old blog post, since Jeju's routes have been restructured before.
Taxis
Metered taxis are confirmed and readily available — there's a dedicated stand at Gate 3 of the airport, and taxis are a normal way to get around Jeju's towns. I could not verify whether Kakao T or another ride-hailing app has functioning coverage on Jeju specifically, so don't count on hailing a car from an app; budget for a metered taxi from a stand or a phone call instead, especially late at night when bus service thins out.
Walking the Olle Trails (올레길)
If you want to actually see the island rather than pass through it, the Jeju Olle Trail (제주올레길) is the best-documented way to do it on foot. It's a network of 27 trails: 21 main numbered routes, 6 numbered sub-routes (like 7-1 or 10-1, or lettered splits like 3-A/3-B), and one spur that connects to the airport itself — 437 km in total, averaging about 16 km per route. Routes are graded easy, medium, or high difficulty; Route 21, for example, is easy at 11.3 km over 3–4 hours, while Route 9 covers a similar distance but is rated high difficulty.
The trail was founded in 2007 by journalist Suh Myung-sook, inspired by Spain's Camino de Santiago, and is now maintained by the Jeju Olle Foundation. It's marked with blue and orange ribbons (blue for the ocean, orange for Jeju's satsuma oranges) tied to trees and utility poles, with blue arrows for the forward direction and orange for reverse, plus pony-shaped "ganse" sculptures marking trail junctions. Several routes link out to short island-hopping ferries — a 15-minute ferry from Seongsan Port reaches Udo, and a ferry from Moseulpo Port reaches Gapado. Since one route runs to the airport and the rest largely trace the coastline through fishing villages and towns, the Olle network doubles as a car-free way to string together several days of sightseeing, provided you're comfortable relying on the intercity bus (or your feet) between trailheads.
Cycling the Coast
Jeju is popular with cyclists, and the geography supports it: a 258 km coastline with a road network built to hug it. That said, I could not confirm the specifics of any officially designated cycling route, bike lane, or numbered cycling road from a working source, nor find verified details on bike rental locations or whether bikes can be taken on intercity buses. If cycling the coast is part of your plan, treat the road network as a real option based on the island's confirmed geography, but verify rental logistics and route markings locally rather than from an old route number.
Arriving by Ferry
If you're bringing a vehicle or just prefer not to fly, ferries are a real alternative. Jeju City's port is the largest on the island and handles the great majority of the island's passenger and cargo vessel traffic. The Korea Shipping Association's ferry booking aggregator, island.theksa.co.kr, lists Jeju under a "Jeju Province" destination category alongside connecting ports including Mokpo, Wando, Sacheon (Samcheonpo), Nokdong, and Jindo, plus the outlying islands of Gapado, Marado, and Chuja-do — though the site's homepage doesn't spell out which of those pairs directly with Jeju, at what frequency, or for how long. Sailing times, current fares, and whether a given sailing carries vehicles all need checking on the booking site itself (or by phone at the KSA's booking line) before you rely on one.
Where to Base Yourself
Based on what's actually confirmed: Jeju City is the island's principal transportation hub and home to both the airport and its largest port, which makes it the easiest base if you're arriving and departing without a car and want the widest range of onward bus connections. Seogwipo, an hour away by bus, puts you closer to the south coast's Olle routes and cuts down on the daily bus commute if your itinerary leans toward that side of the island. Either way, expect to plan around bus schedules rather than assume Jeju City-style frequency once you're outside the two main towns.
The Honest Verdict
Going car-free on Jeju is workable but not effortless. The Olle Trail network is genuinely excellent and well worth doing on its own terms, the Jeju City–Seogwipo bus corridor is a real hour-long backbone you can plan around, and taxis fill in the gaps. What you lose is spontaneity: reaching the interior, the smaller coastal villages off the Olle routes, or squeezing several sights into one day all get harder without a car, and I couldn't verify enough about fares, schedules, or ride-hailing coverage to promise it will be smooth. Build slack into your itinerary, confirm bus and ferry details locally rather than from any single source (including this one), and lean on the trails and the coastline — that's where Jeju rewards patience over car-based rushing anyway.
More: Korea Airports Corporation — Jeju International Airport