Seoul Incheon International Airport (ICN) serves Seoul, the capital of the Republic of Korea, and lies about 30 miles from the city center. The airport sits at an elevation of just 4 feet above sea level, reflecting its coastal location.

Incheon functions as a major international gateway, connecting Seoul to destinations across East Asia, Europe, and North America, as well as Southeast Asia. Its departure and arrival patterns show a strong mix of short-haul regional flights within Asia alongside long-haul services reaching Europe and the Americas, underscoring its role as a hub linking the region to global markets. The presence of multiple carriers operating both into and out of Incheon highlights its significance as a transfer point for travelers moving between continents, rather than serving purely domestic or point-to-point traffic.

For travelers, the airport's low elevation and coastal position mean it is well integrated into international flight networks, offering broad connectivity for both regional hops and intercontinental journeys. Its distance from central Seoul positions it as a dedicated international facility, distinct from more centrally located domestic airports, and its route profile confirms its function as one of the primary aviation links between Northeast Asia and the wider world.