No.Bus RoutesTime 1.Bangkok - Nong Bua Lamphu07:00 AM, 07:15 PM 2.Bangkok - Nong Khai08:00 AM, 07:30 PM, 09:00 PM 3.Bangkok - Udonthani06:30 AM, 07:20 PM 4.Bueng Kan - Bangkok10:30 AM