An overview of Incheon International Airport on Incheon's Yeongjong Island / Courtesy of Incheon International Airport Corp.

Incheon International Airport has achieved a historic milestone in global aviation by recording 1 billion cumulative passengers in the shortest period among the world's major hub airports, the airport operator said Tuesday.

According to Incheon International Airport Corp. (IIAC), the airport crossed the 1 billion passenger mark just 25 years and three months after its opening in March 2001.

Spanning exactly 9,232 days of operations, this achievement reflects an unprecedented growth trajectory within the international aviation industry, outpacing all historic rival global hubs.

The airport’s timeline for reaching 1 billion passengers was significantly shorter than other major transit hubs across Europe, Asia and the Middle East.