Deal is available for dates up to the end of April 2009.
With Qatar Airline, which is one of only six of the 5 star airlines in the world. Good change over, only about two hours in Doha, which is a small airport and so easy to navigate.
Did a search for a couple of dates and there seems to be plenty of availability.
BTW: There are also a couple of other stand out prices, notably LA for £284 and Las Vegas for £269