South Korea’s Incheon International Airport has become the world’s busiest for international passenger traffic for the first time, according to preliminary figures published by the Airports Council International. The airport, which is a key entry point into South Korea, handled 38.4 million international passengers in the first six months of this year. That put it ahead of London Heathrow, which recorded 37.79 million international passengers, and Singapore’s Changi Airport with 34.53 million. Middle East diversion boosts transfersIncheon’s jump was linked in part to the re-routing of passengers away from aviation hubs in the Middle East amid the conflict between the United States and Iran. The airport corporation said some travellers who previously transited through Dubai on their way to Europe are now travelling via Incheon. It attributed an 18% year-on-year increase in transfer passengers to that shift. Transfer passengers whose final destinations were in Europe rose by 63.2% to 210,000, the corporation added. Dubai set to miss top fiveDubai International Airport, which placed second in 2024 and 2025 based on full-year rankings, is expected to fall outside the top five in the latest half-year comparison. In the broader context of recent years, Heathrow ranked fifth in 2024 and seventh in 2025. Incheon ranked 12th in 2024 and 13th in 2025. Infrastructure expansion supports higher loadThe airport corporation said its expanding infrastructure has also helped it handle a larger volume of traffic. Incheon International Airport opened in 2001 and currently serves 158 international destinations. By comparison, Hong Kong’s International Airport serves 139 destinations, Shanghai’s Pudong Airport 92, and Tokyo’s Narita Airport 86. Kim Beom-ho, the airport corporation’s acting president, said the result reflected support from the South Korean government and public encouragement, along with efforts from staff at the airport. Kim added that the corporation plans to further improve competitiveness by focusing on passenger convenience. Join the discussion? 13 August 2026
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