South Korea Travel Guide

What paperwork do you actually need?

Most visitors get this backwards, because the headline and the requirement point in opposite directions. Nationals of eligible visa-free countries are exempt from the K-ETA until 31 December 2026. That sounds like no paperwork. It is the opposite: not holding a K-ETA is precisely what puts the e-Arrival Card on your list.

South Korea scrapped its paper arrival card on 1 January 2026 and replaced it with a digital one. Any foreign traveller who is not going through the K-ETA process has to file the free e-Arrival Card in the three days before arrival, which makes it a task for the week of the flight rather than the airport. Holding a valid K-ETA exempts you from it, and that exemption is the main reason anyone would apply for a K-ETA voluntarily while it is waived.

Which one applies to you, and when it is due, is worked through in K-ETA or e-Arrival Card. So the practical decision is which piece of admin you would rather do. Apply for the K-ETA and the arrival card disappears. Skip the K-ETA, as most visitors now do, and file the e-Arrival Card in the three days before you fly. What you cannot do is skip both. Check the official K-ETA site for the current country list before you book, because the exemption carries an explicit end date and has been extended a year at a time rather than made permanent.

How far apart is everything?

Closer than the map suggests. Seoul to Busan, effectively the length of the country, takes 2 hours 18 minutes on the fastest KTX services, and how to book the KTX covers tickets and the fares cut on 1 September 2026. Gyeongju sits on the same line. Jeju is a short flight from either end.

This is the single fact that shapes a Korean itinerary. In most countries, adding a second city to a one-week trip means losing a day to travel. Here it costs a morning. The constraint on a first trip is not distance but appetite: how much you want to move at all, given that Seoul alone can absorb five days without repeating itself.

Train · Trip.com

KTX tickets

Trip.com's Korail booking in English, with e-tickets for KTX routes such as Seoul to Busan.

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Which cities suit which trip?

Seoul is the default first base and deserves five days: the palace district, a market, a modern neighbourhood and a half-day trip out. Nothing else in the country carries the same density of things to do.

Busan is the coastal counterweight, built along beaches and hillsides, and reads as a different country to Seoul despite the two-hour train. Gyeongju was the Silla capital for nearly a thousand years and is the closest Korea comes to an open-air museum, which is exactly why day-trippers underrate it. Jeju is volcanic, green and slower, and the one destination that argues for a flight rather than a train.

Our pick for a first trip is Seoul plus one. Three cities in ten days is possible and usually regretted.

What does it cost to move around?

City transport is cheap and the card is national. A Seoul subway ride starts at 1,550 won on a transit card, raised from 1,400 won on 28 June 2025. Busan runs its own network and its own fares, but the same transit card works on both, and on the buses in each.

The point worth carrying is that the systems are separate while the card is not. You do not need a new card per city, and you should not assume a fare quoted for Seoul applies elsewhere. The transit card is also one of the few things in Korea still loaded with cash, which is covered with cards, taxis and tax refunds in how to pay in Korea. Whether a Seoul pass or WOWPASS beats a plain T-money card is worked out in WOWPASS vs T-money vs Climate Card.

Where to start

Seoul is where most first trips begin, and the paperwork is settled in K-ETA or e-Arrival Card. Busan, Gyeongju and Jeju each have their own guide.

Every price, rule and journey time here carries a source and the date we last checked it. Our approach to sourcing and recommendations is set out in how we choose.