flights have changed already Infact if you keep checking every 10 minutes they keep changing from different sites.. the cheapest I can find now is 435...with AA...Leaving at 12.45pm Dallas NOT BOOKED....RESERVED. AMERICAN AIRLINES 81 LHR London May 09, 2011 12:15 PM DFW Dallas/ Fort Worth May 09, 2011 04:55 PM Economy O..NON STOP ...................................... ........................................... 40A AMERICAN AIRLINES ONE CHANGE OVER.....1HR 1560 DFW Dallas/ Fort Worth Jun 01, 2011 12:45 PM IAH Houston Jun 01, 2011 01:50 PM Economy O 26A AMERICAN AIRLINES OPERATED BY BRITISH AIRWAYS 6155 IAH Houston Jun 01, 2011 04:20 PM LHR London Jun 02, 2011 07:30 AM Economy 81 LHR London May 09, 2011 12:15 PM DFW Dallas/ Fort Worth May 09, 2011 04:55 PM Boeing 767-300 Passenger(763) I have Mileage Balance: 9,502 Miles with AA...anyone know how to use them???