The toll-free Airport Tunnel between Hung Hom and Kowloon Bay passes under the former site of Hong Kong International Airport at Kai Tak and was opened in 1982. It measures 1.3 kilometres and was used by 55000 vehicles daily in 1998.

• 机场隧道横越原启德机场地底，连接红磡与九龙湾，供车辆免费使用。该隧道在一九八二年启用，全长1.；3公里，一九九八年平均每日行车量达55000架次。