Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.1030 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)
"The real problem with BA and Iberia (apart from no availability) is the $300 per segment fuel surcharge."
When redeeming AA miles for TATL award travel on IB, the surcharge is limited to 30 Euros.
Don't overlook 9W from BRU to EWR/YYZ.
But it sounds like the trouble is getting in and out of LAS on your preferred dates.
FYI: Megabus now offers low-cost bus service between Los Angeles and Las Vegas. In addition to AB's and IB's service to LAX, don't forget TN's CDG-LAX nonstop.