Can I go to Jianyang Lujia Airport by bus?

Of course. According to Baidu map, Lujia Town, jianyang city, Tianfu New District, Chengdu is more than 50 kilometers away from the center of Chengdu. You can take a bus from Zhenjin to Jianyang, and take a bus from the East New District to Lujia Airport. Jianyang is a county-level city directly under the jurisdiction of Sichuan Province, which is managed by Chengdu. It is located in the west of Sichuan Basin, at the foot of Longquan Mountain, in the middle reaches of Tuojiang River, 48km away from Chengdu and 220km away from Chongqing.