Does anyone know if the Airport metro line (the one that opened back in 2014 and just runs from the East Bus Station to the airport) is still running?
According to Baidu Maps, it is "暂停运营" （temporarily closed）.

I guess not enough people were riding it to make it worth paying to operate (that is, until it actually connects from the East Bus Station to Jinbi Square).

i found it shutdown last june when i come back from hong kong. it is not in operation 3 weeks earlier either. airport express bus is the only means to go to the city. if you have a Kunming bus card you get discount riding on the express bus plus you don't have to queue up for the ticket.