Dong Hoi Airport currently is serviced by three airlines including Vietnam Airlines, VietJet Air and Jetstar Pacific, with flights to and from the major cities of Vietnam such as Ha Noi, Ho Chi Minh City, and Hai Phong. In August 2017, Jetstar Pacific will launch a Chiang Mai–Dong Hoi international flight. The road and rail systems, border economic zones and ports are likewise interlinked. There are two national highways – National Route 1A and Ho Chi Minh Highway – and the North–South railway running along the length of the province, the Cha Lo Border Gate Economic Zone, which extends into Laos, and Hon La deep water seaport which is capable of vessels of 30,000–50,000 tonnes. Going east to west, National Road 12A connects Hon La deep-water seaport 2 to Cha Lo Border Gate Economic Zone (with Laos) via Huu Nghi No.3 Bridge to Thailand, Myanmar and Southeast Asian nations with the length of about 350 km.