Drukair Royal Bhutan Airlines at the launch of winter 2018/19 season from 28OCT18 changes domestic flight numbers, currently using 4-digit flight numbers. Planned flight number change includes the following.
Paro – Bumthang KB1000/1001 > KB010/011
Paro – Gelephu – Yonphula KB2000/2001 > KB050/051
ATR42 aircraft operates these routes 4 weekly flights each, listed on scheduled basis.