Season 2 "morality bites" the sisters go to the future to see why Phoebe is burnt at the stake, and piper is divorced from Leo n they have a daughter called melinda
Marry go around
The very last episode of charmed of Season 8 Episode 22 "Forever Charmed" when Piper and Leo go back in to time to save Phoebe, Paige, and even Billie
in season 8 disc 3 or 4
it was the sisters guardian and in one of the episodes they found out it was they battled a demon to keep her safe and then she went on her marry way
Starfire goes into the future in How Long is Forever?
"Oh, my goddesses... Part 1" of 2... Season 5 finale of charmed. That's his first appearance in the show. He states his name right after saving Phoebe from Meta, who turns Paige to stone... If you want more detail look the episode up or go watch it.
I don't think they time travel together. Episode 45/46 "Hereafter" Superman ends up 30,000 years in the future. And in "Unlimited" season 2 Episode 13 "The Once and Future Thing, Part 2: Time, Warped" Batman, Green Lantern, and Wonder Woman go into the "Batman Beyond" future.
Phineas and Ferb's Quantum Boogaloo
The Inner Senshi (Moon, Mercury, Mars, Venus, and Jupiter) traveled to the 30th century in Japanese episode 82/English dub episode 75.
The episode was called "The Misty Mermaid." Only two of her three sisters got the be tied up and gagged.
Charmed is a very complex show, and although im not certin their is a new show about charmed or atleast i think...you see if you go on youtube and type in "Halliwell" the sisters last name then a fan made comming attraction will come up as a video and you can see all new stars immatating the charmed ones "some better than others" some intitled "charmed children" but if you look that up im almost positive youll just find clips from the epasode "that 70s epasode: "the 3 faces of phoebe" or "hyde school reunion" but unfortunatily that's as far as theyll get with the Charmed series just 8 seasons....if you want to enjoy them you can buy all 8 seasons at a local F.Y.E. or go on www.youtube.com for more charmed fan fiction thanks for you question and ill answer any more as long as their about charmed.