First off, congrats on the win!
My best recommendation is to try to seek a cheaper flight. $2000 sounds awfully hefty for a flight that is over 2 months away. The PokerNews Cup is in late October, right?
Try some of these links:
http://www.fatwallet.com/t/63/312271/
http://www.travelhub.com/airfares/intl.html