We are coming down to the wire, and it looks like the longer you wait, the higher ticket prices go up. Me, my wife and my son are all going, but it looks like it is going to be $1500 each

The main problem is that we don't know the exact date we need to leave. But anyway, I heard there is possibly some special rates that some places offer for tickets to people who are adopting internationally. Is that right? Any help would be greatly appreciated. We need to leave somewhere at the end of June.
Thanks!!!!!