The subway gets most of the attention, which makes sense β it’s cleaner, more predictable, has English signage everywhere. But the bus network in Seoul is genuinely massive and covers areas and routes that the subway doesn’t. I probably take the bus three or four times a week and have for years.
This isn’t going to be complicated. The bus system follows a logic that, once you understand it, makes sense. The main thing most people don’t know is what the bus colors mean.
The Color System
Seoul city buses are color-coded by function. This matters a lot and is the first thing to understand.
Blue (κ°μ , Trunk Lines)
Major routes that go across large distances through the city center. If you’re going from one end of the city to another β say, from Mapo to Jamsil β you’d likely use a blue bus. These stop frequently but cover a lot of ground. Route numbers are in the 100β900s range.
Green (μ§μ , Feeder Lines)
Shorter routes that connect neighborhoods to subway stations. These are the ones I use most often for day-to-day stuff β to get from my apartment to the nearest subway line, or between two nearby areas that would be awkward on foot. Numbers are in the 1000s range typically, with a district prefix number.
Red (κ΄μ, Wide-Area Express)
Express buses connecting outer neighborhoods and satellite cities to central Seoul. Less relevant if you’re staying within the main city. If you’re going somewhere like Bundang or Ilsan, these come up.
Yellow (μν, Circular)
Loop routes that circle within a specific area β Jongno, Gangnam, central districts. Useful if you’re staying in one neighborhood and want to get between spots without backtracking through a subway transfer.
How to Pay
T-money card. That’s the main method.
T-money is the transit card that works on buses, subway, and some taxis. You get one at any convenience store or at airport kiosks β around 2,500 won for a blank card. Top it up at convenience stores or at subway station kiosks. There’s no minimum top-up amount but 10,000β20,000 won gets you through a few days of transit easily.
Bus fare as of early 2026: around 1,500 won per ride for adults (standard city bus). Express red buses are more expensive, around 2,800β3,500 won.
Credit cards also work on most buses now β contactless payment, tap when you board. This works but T-money is more convenient because it also handles transfers.
The Transfer Discount
This is important and not obvious until you know about it.
When you transfer from bus to bus, or bus to subway, within 30 minutes of your initial tap, you get a free or heavily discounted transfer. This means a trip that involves two buses doesn’t cost twice the fare β it costs one full fare plus nearly nothing for the second leg.
To get the discount: tap your T-money when you get OFF the bus (exit tap), then tap again when you board the next bus or enter the subway. If you don’t tap out when exiting, you lose the transfer benefit.
This confused me for an embarrassingly long time when I first started using buses regularly. I kept paying full fare on transfers because I didn’t know to tap out. My biggest mistake, honestly β probably cost me thousands of won over several months before a coworker explained it.
Finding and Boarding the Bus
Bus stops in Seoul have screens showing the next arrival time for each route that stops there. The screen is usually in Korean but the numbers and arrival countdown are readable regardless. Route number + minutes until arrival.
When the bus arrives, the door opens and you board from the front door. Tap your T-money on the card reader on the right side as you step in. The reader will beep and display the remaining balance on your card.
Exit from the back doors (or front, on less crowded buses). Tap your card on the card reader near the back door as you exit if you want the transfer discount.
The bus announces each stop in Korean and English in most major routes. The route information screen inside the bus shows the upcoming stops in sequence.
The Reality of Bus Traffic
Buses in Seoul run on regular roads. This means traffic. During morning rush hour (8β9:30am) and evening rush (6β8pm), a bus route that takes 20 minutes off-peak might take 45 minutes. I’ve been late to things because I took a bus during rush hour when I should have taken the subway.
If you’re on a time constraint, the subway is more predictable. Buses are better for non-rush situations, for areas that aren’t well-served by subway, or when you want to see the street view of the city while you travel.
Some bus stops have dedicated bus-only lanes that help reduce this. On roads like Teheran-ro in Gangnam or Jong-ro in central Seoul, there are center-lane bus roads where buses run in the middle of the street. The stop is in the middle of the road and you cross to it via a pedestrian island. Slightly unusual if you haven’t seen it before β the bus stop is in the median, not on the sidewalk.
Night Buses (μ¬μΌλ²μ€)
The subway shuts down around midnight to 1am depending on the line. Night buses (owl buses) run from about 11:30pm to 5:30am on select routes covering main corridors.
These are numbered in the N00s range β N13, N26, etc. They run less frequently (every 30 minutes or so) and cover less ground than daytime routes. If you’re going out late and don’t want to take a taxi, check Naver Maps for night bus options for your specific route.
The stops for night buses often overlap with regular daytime stops. Check the stop sign β routes that stop there are listed on the sign pole, including night routes. When I first visited the area around Itaewon late at night years ago, I was surprised to find a night bus that went all the way across the Han River bridge to my area without a transfer. Saved me the taxi fare.
Apps for Navigation
Naver Maps is the primary tool. Enter your destination, select “transit” as the mode, and it shows bus and subway options with real-time estimates.
KakaoMap is similar and also reliable. Both have English language options in settings.
For real-time bus location specifically, “Seoul Bus” (μμΈλ²μ€) is an app that shows exactly where specific buses are on the route right now. Useful if you’re not sure whether to wait or start walking.
Accessibility
Most Seoul city buses are low-floor and have the fold-down ramp for wheelchair access. Stops usually have tactile pavement guidance. The system has improved significantly over the past ten years β it’s not perfect but it’s meaningfully accessible compared to ten or fifteen years ago.
Senior seats (λ Έμ½μμ) are at the front of the bus β the designated seats with a slightly different color. These are similar to subway priority seats β technically available to anyone when empty, but vacate them when needed.
A Few Route Examples
Hongdae to Myeongdong: Bus 7011 (green, runs often, about 30 minutes off-peak). The subway does this too but requires a transfer β sometimes the bus is actually faster door-to-door depending on exactly where you are in Hongdae.
City Hall area to Bukhansan National Park: there are direct bus routes up to the park entrance areas, depending on which trailhead you’re using. Check Naver Maps with your specific trailhead as destination β it’s more reliable than trying to figure it out from a static schedule.
Han River parks: the riverside parks along the Han are sometimes easier by bus than subway, particularly for Yeouido (bus routes from Mapo side) and Mangwon (directly accessible by bus from western neighborhoods). It genuinely varies by which park area you want to reach.
Last verified: May 2026. Information confirmed through direct experience and current sources. Something changed? Leave a comment and I’ll update it.
About Jay Han
Jay has lived in Seoul for over 10 years and works as a marketing professional. He started Korea Hub to share the kind of honest, specific information he wishes he’d had when navigating Korean culture, food, and travel for the first time. Not a travel blogger β just someone who actually lives here.
More about Jay →