A small country, South Korea also has very efficient public transport. The rail network covers most of the country, and many buses allow you to complete the territory, especially in less mountainous areas. The roads are excellent, and the country also has many airports and a multitude of domestic airlines. You won't have any problems getting around and will find your way around quite easily, especially in larger cities.
There are many airports in the country that connect Seoul to major provincial cities, and some provincial cities between them. It’s an inexpensive and convenient way to travel to Korea, quite safe and fast. You can (and even depending on the periods and destinations, you have to) book by phone (the operators speak English), and, in most cases, you can collect your ticket at the last moment, at the airport or in one of the agencies. neighborhood trip. At the airport, the system is very well done, very fast too, because you can collect your ticket and check in at the same time at one of the many counters in the terminal. All this at the last minute if you don't have any luggage. Seoul's domestic airport is at Gimpo (where you can also find flights to China, Japan and Taiwan), the international airport is on an island off Incheon (see Seoul). There are two other international airports, in Busan (Gimhae) and Jeju, but the latter is mostly served by domestic flights. The Seoul-Jeju line is the busiest in the world!
There are several ports from which you can take a boat to the coastal islands, and the more remote islands of Jejudo and Ulleungdo. You can also take boats from Busan to Yeosu which run along the coast in the Hallyeo Marine Park. The main ports are Incheon, Mokpo, Wando, Yeosu, Busan, Pohang, Donghae, Sokcho. There are also ferries that cross Chuncheon and Chungju lakes. You can also travel from Incheon to China, Japan or Russia.
The bus system is very developed in Korea and this means of transport is cheap, but not always fast (small roads, traffic jams). However, you will have no trouble finding your way, the organization of Korean buses is particularly well thought out. The system is also a bit complex. There are express buses that go directly to their destination. They only stop once or twice at a rest area during the journey and use the motorway when they can, where a special lane is reserved for them. Some express buses run at night. Then there are the intercity buses that connect the cities to each other and sometimes stop at tourist sites. There are still several categories depending on the number of stops served, the route taken, etc.
The train is the best way to travel in Korea between two direct destinations. In general, the cars are comfortable and you can enjoy the beautiful scenery. There are four types of trains: Tong-il or omnibus trains, slow and sometimes uncomfortable, Mugunghwa or fast trains, rather comfortable, the Saemaeul or express train, fast trains, very comfortable, with pleasant dining cars, and finally the KTX, the high-speed train, which now connects Seoul to the largest cities in the south of the country. There are two classes, the price depending on the number of kilometers traveled and the class. Almost all lines depart from Seoul (there are 3 stations).
There are rental agencies in every city, outside most train stations and airports. If not, the local tourist office will help you find one. The prices are reasonable, but it's still expensive if you don't have several to share. As the car is a good way to get around, the roads are mostly in good condition and the Koreans are generally very decent driving.
Korean taxis are convenient and inexpensive. They are everywhere and at any time, in all the big cities and it is also possible to find them in the most remote places. There are several categories, regular taxis (pick up the first 2 km from 2,800 won to 3,300 won, then 100 won every 144m), luxury taxis (recognizable by their black color) and Jumbo taxis, which are very practical because one can travel there to 8 people with luggage. All prices increase by 20% between midnight and 4 a.m.
Korea is a very safe country, so hitchhiking is possible, although it is not common. Koreans are very welcoming by nature, therefore they will not hesitate to lend a hand or take you a few miles if you are in need.