Jeju's bus network splits into three color tiers by speed and coverage
Jeju organizes its public buses into three color groups, and knowing which color serves your route changes how you plan a day. Red buses are express services numbered in the 100s that connect the island's four cardinal points and skip local stops along the way, making them the fastest option when your start and end points are both major hubs. Blue buses, numbered in the 200s, 300s, and 500s, handle standard intercity and city service and are the workhorse tier for getting between towns and neighborhoods. Green buses, numbered in the 400s, 600s, and 700s, run shorter branch and village routes and are the tier most likely to leave you waiting a while at a stop.
| Bus tier | Route numbers | What it's for |
|---|---|---|
| Red (express) | 100s | Connecting the island's cardinal points, skipping local stops |
| Blue (intercity/city) | 200s, 300s, 500s | Standard town-to-town and city service |
| Green (village/branch) | 400s, 600s, 700s | Shorter, local routes with longer waits |
Tourist-oriented shuttle and city tour buses add a fourth option
Beyond the three color tiers, Jeju also runs tourist shuttle buses on routes 810 and 820, plus separate city tour buses, both aimed specifically at visitors moving between attractions rather than at daily commuters. These exist alongside the color-coded network rather than replacing it, so a full-island public-transit plan usually mixes tourist shuttles for sightseeing days with regular color-coded buses for point-to-point travel. A full-day tourist shuttle pass costs KRW 3,000 and is sold at transit centers, which can be simpler than tracking single fares if your stops for the day line up with the shuttle's coverage.
Paying for the bus: card, cash, or a QR code from your phone
You can pay on Jeju's buses with a T-money transport card, cash, or, since August 2024, a QR code from a supported overseas mobile payment app. T-money cards are sold and reloaded at major convenience stores and work throughout Korea on buses, subways, and taxis, not just on Jeju. Paying by card gets you a free transfer up to twice within 40 minutes, which matters if your plan involves changing buses partway through a trip. Cash works too, but you have to pay the maximum fare upfront in exact change, since cash payments don't carry a transfer discount.
The QR option runs on Korea's domestic Zero Pay platform and accepts apps used in nine countries, including Alipay, with a transaction fee of about 0.9%. It is an addition to T-money and cash, not a replacement for either, so if your specific app isn't among the supported ones, falling back to a T-money card or exact cash still works exactly as it did before.
Where a no-car plan works well, and where it needs more buffer
A no-car plan holds up best for itineraries built around towns and attractions connected by red or blue routes, since those are the tiers designed for reliable point-to-point movement. It gets harder for rural attractions, smaller coastal villages, and trailheads that sit specifically on green routes, where the tradeoff for lower traffic and a quieter fare is longer, less predictable waiting. If your priority list leans toward well-known, frequently visited sights, public transit alone is a realistic plan. If it leans toward out-of-the-way spots, plan for either more time per stop or a mixed plan that adds a taxi for the last leg.
What to check before you rely on this
This pack confirms the bus color system, payment methods, transfer rules, and the tourist shuttle day-pass price, but it does not confirm exact fares beyond the KRW 2,000 card base fare, specific route timetables, first and last departure times, or which named attractions sit on which numbered route. Before you finalize a day's plan, check current route and schedule details through Jeju's official bus information channel (bus.jeju.go.kr) for the specific stops you intend to use, since route numbers and coverage can change.
What this guide does not cover
This guide does not compare the cost or time tradeoff between buses and renting a car for a full multi-day trip, and it does not cover taxi fares or ride-hailing options in detail. If your itinerary depends heavily on rural or hiking-adjacent destinations, a separate look at car rental as a foreign visitor is worth reading before you decide.