aus/uk trip for cheap!

the other day i saw on msn that they were offering trips to the uk and other places real cheap. When I'm talking cheap I mean around $600 for one person plus $1 for the second companion. I want to take my girl to either of these places later this year. I can't find the prices I found on msn the other day so I am turning to the only place where I know that I can find people to help, the empeg board. Does anyone here know where I can find cheap fares for sometime in late august / early september for cheap? any help will be greatly appreciated.