Line 18 will be an express metro line with nine stations linking Chengdu South mainline station with New Chengdu Airport which will be situated 51km east of the city near Jianyang. The 58.6km line has a budget of Yuan 23bn ($US 3.7bn) and construction is due to start next year with commissioning scheduled for 2019.

Phase 2 of Line 6 will extend the line by 18.7km from the Fu River to Wang Kong Temple with 13 new stations. The Yuan 12.3bn project will be completed in 2020.

Line 4 will also be extended 1.8km with two new stations at a cost of Yuan 1bn, while the Yuan 2bn third phase of Line 3 will extend the line by 7km.

With the implementation of these projects the network is expected to reach 383km by 2020, just 10 years after the opening of the first line.