Define "travel", but the answer is "not really, or not relative to the traveler anyway".

Gravity can slow down the rate at which time passes, but in no theories of gravity that have ever been tested has gravity been able to actually reverse the passage of time, nor is gravity able to bore a hole into the fabric of time and output somewhere else, to our knowledge. Now, as I said above, there are no theories that have been supported by any hard data that reconcile Einstein's classical gravitation with quantum mechanics - and nobody has ever even seen the event horizon of a black hole, let alone seen what is going on inside of one (according to Einstein's theory, you CAN'T see what is going on inside without going in yourself - and then never coming out).