The analysis of the most researches related to the supplier selection shows that very little attention is given to transportation although its cost may be significant important to this selection. In this paper, we present a multiobjective approach of selecting suppliers and allocating the order quantity among them, taking into account transportation. The objectives to minimize in the model are the total cost and the lead-time. The total cost is the sum of transportation, inventory and ordering costs. The constraints related to suppliers, buyer and transportation are also considered in the model. The model is implemented in Matlab, software specialized in optimization. An evaluation of the model is presented under various scenarios.