China is to build three new airports in southern Tibet near the Tibetan-Indian-Nepal-Butan border, in addition to a new runway at Lhasa airport, for both domestic and international flights. Chinese state media has reported that they will “promote tourism and the economy”. The airports will all be above 3,900 metres in altitude and will cost around 16.7 billion yuan (US$2.6 / £1.9 billion).