The Venus missions... One way rendezvous - 80 days is the minimal - https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NECs=on&chk_maxMag=on&maxMag=25&c

The Venus missions... One way rendezvous - 80 days is the minimal - https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NECs=on&chk_maxMag=on&maxMag=25&chk_maxOCC=on&maxOCC=4&chk_target_list=on&target_list=Venus&mission_class=oneway&mission_type=rendezvous&LD1=2016&LD2=2024&maxDT=2.0&DTunit=yrs&maxDV=7.0&min=DT&wdw_width=-1&submit=Search#a_load_results https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NE... If you're just doing a flyby and letting the ship then get lost, it can get down to 48 days https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NECs=on&chk_maxMag=on&maxMag=25&chk_maxOCC=on&maxOCC=4&chk_target_list=on&target_list=Venus&mission_class=oneway&mission_type=flyby&LD1=2016&LD2=2024&maxDT=2.0&DTunit=yrs&maxDV=7.0&min=DT&wdw_width=-1&submit=Search#a_load_results https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NE... The one way flyby is not likely one that would be good for human travelers as you aren't really stopping (or even slowing down enough to get captured). The shortest round trips are just over a year long. https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NECs=on&chk_maxMag=on&maxMag=25&chk_maxOCC=on&maxOCC=4&chk_target_list=on&target_list=Venus&mission_class=roundtrip&mission_type=rendezvous&LD1=2016&LD2=2024&maxDT=2.0&DTunit=yrs&maxDV=7.0&min=DT&wdw_width=-1&submit=Search#a_load_results https://trajbrowser.arc.nasa.gov/traj_browser.php?NEAs=on&NE... The trip there is only 90 days, but the return leg is one of the least optimal options with a 280 day "climb back out" trip. You could do a 96 day there, and 80 day back, but to get the right orbital arrangement it then means that you'd need to stay at Venus for 1.3 years. It is a neat thing to play with and see what options exist.