Lao Airlines plans to commence twice weekly Vientiane-Fukuoka and Luang Prabang-Fukuoka services in Nov-2019 (nikkei.com, 17-Feb-2019). According to OAG, there are currently no operators on the route.
Lao Airlines to commence Vientiane-Fukuoka and Luang Prabang-Fukuoka services in Nov-2019
19 February, 2019