Tianjin Binhai International Airport — Tianjin, China

Tianjin Binhai International Airport, coded TSN, serves the major port municipality of Tianjin along China's Bohai Sea coast, functioning both as a passenger gateway and a significant air cargo hub for the wider Beijing-Tianjin-Hebei economic corridor. The airport sits near Tianjin's aviation manufacturing zone, home to an Airbus final assembly line that produces A320-family aircraft for the Chinese market, giving the city an unusual industrial link to commercial aviation beyond passenger service. TSN has absorbed overflow traffic from the capital region as Beijing's own airports approached capacity, and it supports both domestic routes across China and a growing set of international connections. Tianjin's status as a historic treaty port, with preserved former foreign concession districts, adds architectural variety to a metropolis now defined by heavy industry and shipping.