Introduction.Procrastination is the act of delaying necessary tasks until the extreme of experiencing discomfort and negative consequences to the individuals.The presence of nontraditional students at universities is a phenomenon which has increased remarkably over the last decades.This type of university students finds some difficulties during their grade.This could result in a higher prevalence of procrastination behaviors among nontraditional students at university.To test this, our work compares procrastination levels and reasons to procrastinate among traditional and nontraditional students Method.A sample of 479 Colombian college students was used.Procrastination and the reasons to procrastinate are measured by the Procrastination Assessment Scale -Students (PASS).The data analysis is based on descriptive statistics, exploratory factorial analysis, t test for independent samples and Coohen's d. Results. Nontraditional students show higher procrastination levels (t=4,412; p<0,001; d=0,459), although their reasons to procrastinate are similar to those of traditional students.The nontraditional student condition is a demographic variable relevant for explaining academic procrastination. Discussion and Conclusion.These results suggest the convenience of offering academic counselling and guidance to nontraditional students, in order to attend procrastination and reducing that way low achievement or dropout risks.