The national carrier, Korean Air served over 26,800,000 passengers, including almost 19,000,000 international passengers in 2016. A second carrier, Asiana Airlines also serves domestic and international traffic. Combined, South Korean airlines serve 297 international routes. Smaller airlines, such as Jeju Air, provide domestic service with lower fares.
Flag of South Korea:
The flag of South Korea, also known as the Taegukgi (also spelled as Taegeukgi, lit. ‘Taegeuk flag’), has three parts: a white rectangular background, a red and blue Taegeuk in its center, and four black trigrams one toward each corner. The first pattern of Taegukgi was made by Kojong. Flags similar to the current Taegeukgi were used as the national flags of Korea by the Joseon dynasty, the Korean Empire, and by the Korean exile government during Japanese rule. It has continued to be used as a national flag even after the establishment of the South Korean state on August 15, 1948.
The flag’s field is white, a traditional color in Korean culture. White was common in the daily attire of 19th-century Koreans, and it still appears in contemporary versions of traditional Korean garments, such as the hanbok. The color represents peace and purity.
The circle in the center represents balance in the universe. The red half represents positive cosmic forces, and the blue half represents the opposing negative cosmic forces.
Together, the trigrams represent movement and harmony as fundamental principles. Each trigram (hangeul: 괘 [gwae]; hanja: 卦) represents one of the four classical elements; heaven, fire, water, and earth.
Detailed commentary regarding the development of the South Korean flag are available elsewhere.