South Korea’s Incheon Overtakes London’s Heathrow as World’s Busiest International Airport South Korea’s Incheon International Airport has surpassed London Heathrow as the world's busiest international airport, according to recent data.
Incheon handled 38. 39 million international passengers in the first half of 2023, a significant increase from its fifth place ranking in 2018 and third place in 2024.
The shift from Heathrow to Incheon reflects broader changes in global politics, economics, and demographics.