Just checking ... LAX-LHR midweek for Oct.
United's web site: fare basis VKXGB8I, $477.97 total.
Elsewhere: fare basis VKXSP7A, $651.97 total.
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">OTHER CONDITIONS
WITH THE EXCEPTION OF 1K SYSTEM UPGRADES- THESE FARES ARE NOT UPGRADEABLE THROUGH MILEAGE PLUS/SYSTEM UPGRADES/SALES UPGRADES TO A HIGHER CLASS OF SERVICE.</font>