A number of routing methods have been researched on minimizing the overall travel cost when delivering packages in dynamic environment. However, in the present situation, both reducing operational costs and improving quality of services should be considered. Thus, in this thesis, we proposed an approach using simulation to evaluate those routing methods from on both sides. By using what-if analysis in the simulation, we found a tradeoff between travel costs and response time. We conclude the advantages and disadvantages of those routing methods that can be applied in different situations.