Assessing the viability of enabling a round-trip carsharing system to accept one-way trips: Application to Logan Airport in Boston

•There is a potential market for integrating round-trip and one-way carsharing.•One-way trips would seem to take advantage of idle vehicles in round-trip systems.•Implementing vehicle relocations has a great impact on increasing profits.•Stations with high demand and 2 or more vehicles should offer one-way trips.