If you're visiting Korea for the first time, bus and subway transfers can look more complicated than they actually are.
The good news? Once you understand one simple rule, it becomes pretty easy:
Tap your transportation card when you get off.
That's the key to getting the transfer discount.
Here's a simple guide to how transfers work in Seoul.
1. What Counts as a Transfer?
In Seoul, you can receive transfer discounts when moving between:
- Bus → Subway
- Subway → Bus
- Bus → Bus
You need to use a transportation card such as T-money for the transfer system to work. Seoul's integrated fare system calculates the fare based on the combined journey rather than charging a completely new base fare every time.
2. The Most Important Rule: Tap When You Get Off
This is the part first-time visitors should remember.
When you get off a bus, tap your T-money card on the reader near the exit door.
If you don't tap when getting off, the system may not recognize your next ride as a transfer.
So even if it's your final bus ride, I recommend making it a habit:
Tap when you get on. Tap again when you get off.
For the subway, simply tap through the ticket gate when entering and exiting as usual.
3. How Much Time Do You Have to Transfer?
Normally, your next ride needs to begin within 30 minutes after tapping out.
At night, the transfer window is longer.
From 9 PM to 7 AM the next day, you have up to 60 minutes to make the next transfer.
That means you usually have enough time to walk from a bus stop to a nearby subway station without rushing.
4. A Simple Example
Let's say you're traveling from your hotel to a tourist attraction.
You take:
Bus → Subway → Bus
If you use the same T-money card correctly and make each transfer within the allowed time, the system calculates your fare as one connected journey under the integrated transfer fare system.
You may still pay an additional distance-based fare depending on how far you travel, but you don't simply pay a completely new base fare every time you change transportation.
5. When the Transfer Discount May Not Apply
The transfer discount does not always continue automatically.
Here are the main situations to watch for:
You board the same bus route again
If you get off a bus and then take the same route again, it may be treated as a new ride rather than a discounted transfer.
You wait too long
If your next ride starts after the transfer time limit, the system will treat it as a new journey.
You forget to tap when getting off the bus
If you don't tap out, the system may not recognize your next ride as a transfer.
Simple rule: Use the same card, transfer within the allowed time, and always tap when you get off the bus.
6. How Many Transfers Can You Make?
Seoul's system allows up to four transfers, which means up to five connected rides in one journey under the transfer rules.
Most tourists probably won't need that many, but it's useful to know if your destination requires several changes.
Need a T-money Card?
If you're planning to use buses and subways in Korea, a transportation card such as T-money makes traveling much easier.
You can buy one after arriving in Korea, or reserve one before your trip and pick it up at Incheon Airport.
Check T-money Card Options on Klook
One Tip From a Local
Don't worry too much about memorizing every transfer rule.
Use Naver Map to find the best route, follow the suggested bus or subway connections, and remember to tap your card when getting off the bus.
Once you've done it once or twice, using public transportation in Korea feels much easier.
Need help with Naver Map?
If you're not sure how to search subway, bus, or walking routes, check this guide:
How to Use Naver Map in Korea (2026): A Simple Guide for Foreign Travelers
Affiliate disclosure: This post contains affiliate links. I may earn a commission from qualifying bookings.
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