Djibo

From Ouaga, you can go almost directly north through Kongoussi, which is shorter but unpaved the whole way STAF, or go through Ouahigouya Ouaga-OHG is paved, but OHG-Djibo is not and change busses there STMB, SOGEBAF. 4000 CFA one way; 7000 CFA round trip.

STMB
daily 7:00, 14:30 to OHG, 11:00, 17:30 from OHG. Be sure to ask about their Carte de Fidelité sort of like frequent flyer programs, which can be obtained in Ouaga or Ouahigouya.
STAF
daily 7:00 to and from Ouaga
SOGEBAF
daily 6:30, 13:30 to OHG, 10:00, 17:00 from OHG. There is a third bus to OHG on Wednesdays that leaves at 17:00. They are consistently very late and undependable.