Bus departs from Newcastle - Vang Vieng one flight per day is 09.00. And from Vang Vieng - Udon Thani one flight per day is 8:00 pm. It took about seven hours.
The bus leaves from Udon Thani - Vang vieng day 1 attraction is the time 09.00 PM and from Vang vieng - Udon Thani, a 1 travel is 08.00 PM. The journey time is approximately 7 hours.