South Korea's Incheon International Airport became the world's busiest airport by international passenger traffic for the first time, according to preliminary data from the Airports Council International.

Incheon Airport overtook London Heathrow and Singapore Changi to become the world’s busiest international passenger hub in the first half of the year, reaching

Incheon International Airport handled the highest number of international passengers in the first half of this year globally, surpassing long-stand...