Hi, I am trying to plan a trip from SFO (San Francisco Intl.) to LHR (London Heathrow Intl.) The cost, cheapest one I have been able to find, is coming out around 1,000 USD. The dates I entered are not flexible (Departure Dec. 17th., 2008 to Jan. 3rd., 2009). I am trying to find something cheaper, I am thinking about bidding on Priceline, if I do how much should I bid for? Should I go 50% less or what? Please help :) I'm new at this. Thanks!! Potterz