For future space missions, exploiting a planet’s moons to escape from its sphere of influence can significantly improve the performance of the mission itself. In fact, being able to return to Earth while saving the maximum amount of propellant possible allows us, at the preliminary stage, to design the mission with more mass to be allocated to the payload, which means being able to carry out more detailed explorations that will allow us to gain a greater understanding of our planetary system. This study focuses on identifying the minimum-propellant mission architectures for future return missions from planets with moons to Earth.