Background: the likelihood of successful vaginal delivery is affected by various factors. We aimed to assess the factors that are associated with successful vaginal delivery following cesarean section CS. Methods: This was a prospective observational study that assessed the effect of maternal age, parity, antenatal care visit, gestational age, history of medical illness, smoking history, indication for past cesarean section, inter delivery interval, history of previous successful vaginal birth after cesarean section VBAC, past spontaneous vaginal delivery, membrane status on admission, cervical dilatation on admission, duration of labour, meconium stained liquor on the likelihood of achieving vaginal delivery following a previous CS. Results: about 500 pregnant women with previous one lower segment CS were included in the study, 83% (415/500) achieved with successful (VBAC), and 17 % (85/500) ended with failed trial of labour after cesarean section (TOLAC). Fifty –eight percent of the participants with successful VBAC had a history of vaginal delivery. Conclusion: success rate of VBAC is high and TOLAC is safe for most of pregnant women who attempt to deliver vaginally after one CS. Successful VBAC may help in decision making and contribute to a reduction in cesarean delivery rates and reduce maternal morbidity and mortality associated with repeated CS.