I actually up until recently thought that Voyager 1 did a flyby in the 70s but apparently they went to Saturnus moon Titan instead.
It's an historic event for sure!
Did either of the Voyagers visit Pluto?
Why didn't the Voyagers fly by Pluto?
"Answer: Both Voyagers flew beyond the orbit of Pluto/Neptune in 1989, but neither flew by Pluto, which was elsewhere in its orbit at the time. It was never planned that the Voyagers would visit Pluto.
The original mission of Voyager was to explore Jupiter and Saturn. Two spacecraft were sent on slightly different paths, first to Jupiter and then, with gravity assists, on to Saturn. Voyager 1 could have been aimed on to Pluto, but exploration of Titan and the rings of Saturn was a primary scientific objective. This caused the trajectory to be diverted upward out of the ecliptic plane such that no further planetary encounters were possible for Voyager 1. Once Voyager 1 had successfully gathered data at Titan, Voyager 2 was allowed to go on to Uranus and Neptune. Voyager 2, theoretically, could have been aimed for Pluto, but the aim point would have been inside the planet of Neptune - not very practical. So Pluto was the only outer planet the Voyagers didn't visit."
https://voyager.jpl.nasa.gov/faq.html^^^ Pretty cool stuff in there if you're looking to kill some time.