Dandong Langtou International Airport — Dandong (Zhenxing), China

DDG denotes Dandong Langtou International Airport, which serves Dandong, a Chinese border city facing North Korea across the Yalu River in Liaoning Province. Despite its international designation, the airport primarily handles domestic routes connecting Dandong to major Chinese cities like Beijing, Shanghai, and Shenyang, supporting the city's role as a trading port and manufacturing center. Dandong's unique position as China's largest border city with North Korea makes it a point of interest for cross-border trade. The airport replaced an older facility and was designed with capacity to grow alongside the city's expanding trade and tourism ambitions, though passenger volumes remain modest compared to larger northeastern Chinese hubs.