The closest to time travelling we get is looking up at the stars.

In related news, if you want to time travel, become a bodhisattva (or a Buddha, though bodhisattva eventually become buddhas anyways...). Seriously, you get all these supernatural powers, including time travelling. Then again the whole idea of time and space is kinda different in Buddhism. Then again, according to some Mahayana schools we are all guarenteed buddhahood, eventually.