South Korean airport becomes busiest in world for global traffic amid Iran war

Incheon airport had 38.39m international passengers in first half of 2026, as traffic diverted from Middle East hubs

South Korea’s Incheon airport has become the world’s busiest airport for international passengers, in part owing to disruption in the Middle East caused by the Iran war.

The airport, South Korea’s main gateway, about 30 miles (48km) west of Seoul, handled 38.39 million international passengers in the first half of 2026, according to preliminary figures compiled by the Airports Council International (ACI), the global trade body for airports.