Using conventional chemical propulsion, a one-way trip to Mars could take anywhere from 7 to 9 months, depending on the launch window and the trajectory taken.
However, with more advanced propulsion systems, such as ion drives or nuclear thermal propulsion, the trip could potentially be reduced to as little as 3 months.
It's worth noting that these estimates do not account for the additional time required for deceleration and landing on Mars, which could add several more months to the total travel time.
