A First-Time Guide to the Seoul Subway: Which Direction Should You Take?

After looking up your destination at the station entrance and heading underground, first-time riders often stop on the way to the platform.

Trains on the same line run in opposite directions, while signs for line numbers, exits, and transfers all appear overhead at once.

Is the line number all you need? Which platform should you head to? Do you need to leave the station to transfer? And once you reach your destination, can you take any exit?

You may have heard that Seoul's subway is clean and convenient. But on your first ride, those impressions matter less than knowing which sign to follow at that moment.

This guide follows the journey from checking which way to go before passing through the fare gate to finding the right platform, following the transfer corridor, and taking the correct exit at your destination.

The Line Number Alone Does Not Tell You the Direction

At first, you may check only which subway line your destination is on before heading underground.

But trains on the same line run in opposite directions, so the line number alone does not tell you which platform to head to.

You do not need to memorize all the terminal station names. Find your current station on a map app, then check the next station toward your destination.

On the platform signs or route map, look for the side that shows the station you checked in the app as the next stop. That is the direction you want.

Seoul subway signs use both line numbers and colors. Use the color to spot the sign you need, then check the number to make sure you have found the right line.

Tap the Same Card When You Enter and Exit

Once you have checked the line and the next station toward your destination, pass through the fare gate.

If you have a topped-up transit card, tap it on the card reader at the fare gate. If you do not have one, you can buy a single-use transit card from a ticket machine at the station.

When the card is accepted and the gate opens, walk through.

At your destination, tap the same card again when you exit through the fare gate.

For details on buying and topping up a T-money card and checking its balance, see the first-time guide to using a T-money card.

Use the Next Station to Choose the Right Platform

After passing through the fare gate and following the signs for your line, the path splits as you approach the platforms.

At this point, use the next station you checked in the app to confirm your direction on the platform signs.

The route maps near the platform entrance or on the wall show the stations the train will pass through. On the map, find the station you checked in the app. Whichever side shows it as the next stop is the direction you need.

For example, if you are taking Line 4 from Seoul Station to Myeongdong, the next station is Hoehyeon, followed by Myeongdong.

Seoul Station → Hoehyeon → Myeongdong

If Hoehyeon appears as the next station on the platform sign, you are heading in the right direction for Myeongdong.

Even after boarding, you can check the next station again on the route map above the doors or on the screen inside the train, or listen for it in the onboard announcements. If it is the station you expected, you are on the right train.

If the next station is completely different from what you expected, there is no need to panic. Get off at the next station and look for the platform signs pointing in the opposite direction. Even if you have gone one or two stops the wrong way, you can change direction there.

When Transferring, Look for the Next Line Number, Not an Exit Number

If you cannot reach your destination on a single line, you will need to transfer to another line along the way.

When you get off at a transfer station, passengers spread out in different directions. Overhead, Exit signs point toward the station exits, while Transfer signs lead to other subway lines.

To continue your trip, look for the word Transfer and the number of the line you need to take next, not an exit number.

For example, when transferring from Line 2 to Line 4, follow the transfer signs for Line 4, not the signs for Exit 4.

The number may be the same, but one refers to an exit and the other to a subway line. The label next to the number tells you which one you are looking at.

Transfer Corridors Can Be Longer Than You Expect

At large transfer stations, the walk between lines can be longer than you expect. You may go up or down stairs, ride an escalator, and turn several corners without reaching the platform right away.

As long as the same line number keeps appearing on the signs, you have not gone the wrong way. The platform for your next line may simply be far away, at the end of a long transfer corridor.

At some stations, colored lines on the floor or walls also point you in the right direction. But these lines are not used the same way at every station, so check the line number on the signs as well.

Some transfer corridors have a transfer gate where you need to tap your transit card again. Use the same card you used when you entered the subway.

When choosing your first platform, look for the next station. When transferring, look for the number of the next line.

Check the Exit Number Before Going Up to Street Level

Getting off the train at your destination does not mean the journey is over.

Different exits within the same station lead toward different streets and buildings. Your hotel, a shopping street, and a bus stop may not all be near the same exit.

If you simply follow the crowd up a staircase or escalator, you may come out on the wrong side of the road.

You might then have to cross a major road or get your bearings again once you are above ground.

Before heading upstairs, check the map on your phone once more.

Find the exit number closest to your hotel, restaurant, or attraction, then follow the signs with that same number inside the station. The building or street names listed below the exit number also help you check that you are heading toward your destination.

You do not choose your exit after you are already outside.

The exit number is part of your subway route.

The Signs That Seemed to Blur Together Start to Make Sense

When you first head underground, line numbers, platform directions, transfer signs, and exit signs all appear at once.

It can feel as though you need to understand every sign at the same time.

But you really need only three things.

At the platform, look for the next station toward your destination.

At a transfer station, look for the number of the next line.

At your destination, check the exit number before going up to street level.

You do not need to memorize the layout of the entire station.

Find the one sign you need at that moment, and the next part of your route becomes clear.