From October 25th British Airways start their daily non-stop flight from Heathrow terminal 5 to Las Vegas. The 10 hour direct flight will use the Boeing 777 three-class cabin fleet.
Starting in October return flights are £466.40 ( date dependant ).
Going on their inaugural flight October 25th for a week is £551.00.
Or spend Christmas in Vegas - out 23/12 - in 01/01 £471.40
(above fares found on BA.com @ 16:00 on 21/05/09 )