Since the low in January 2015, the price of Bitcoin has been increasing at a very consistent rate of about 6% per month. As shown on the graph below, the price should hit $1000 in June 2017 (+/- 2 months or so) if it continues at this pace.
Nice graph however any factor can make the price goes down or up like exchange hack that can move the price down or some thing that can make the price goes up(economy, news, etc)
If we don't had the previous problems, for sure the price will already on 1000.