Humanitarian relief organizations struggle with many uncertainties and risks during the response. Through this paper, field-driven insights will be used to discuss how practitioners currently mitigate such risks in relief transportation. The qualitative analysis of collected data after the 2015 Nepal earthquake reveals some of the most important transportation risks that threatened relief operations in response: delivery delays; loss of cargo; insufficient capacity; cargo decay; market fluctuations; unreliable information; and ethical concerns. Research findings explain that using logistics service providers has helped in mitigating transportation risks and improved the overall performance of humanitarian supply chain in Nepal response.