Update at 0400GMT 22APR14
JAL from 07MAY14 is expanding codeshare service with Bangkok Airways, which sees “JL” code appears on Bangkok Airways service to Laos, Cambodia and Myanmar. Reservation for the new codeshare service is expected to be opened soon.
JAL operated by Bangkok Airways
Bangkok Suvarnabhumi – Luang Prabang
Bangkok Suvarnabhumi – Mandalay
Bangkok Suvarnabhumi – Naypyitaw
Bangkok Suvarnabhumi – Phnom Penh
Bangkok Suvarnabhumi – Siem Reap
Bangkok Suvarnabhumi – Vientiane
Bangkok Suvarnabhumi – Yangon