Originally Posted by
hillrider
Not true. It's a business decision by AA/BA. We always suspected it, and it's been confirmed in one of the filings for this round of ATI applications; this restriction will go away if the ATI is approved by the US DOT and the equivalent European agency.
While it may be a business decision, it's still true that the anti-trust immunity does not extend to U.S.-London flights. And of course all that really matters is, irrespective of the reason, one can not use AA miles to fly on BA from the U.S. to London.