Originally Posted by
jdrtravel
Right. This is really by design. The program is intended to provide you with benefits especially while traveling internationally and unable to use your home airline. It is not intended to encourage you to be loyal to another airline. If you are flying 50 flights per year in the US, you would be far better off crediting those to a SM account and likely earning gold or plat status on DL.
I probably hit the threashold to qualify for both SM Silver and FB Gold if not Plat. Here's the million dollar question: can I change a FF number on a single segment
before the trip? I know it can be credited after, but can you change it before departure? For instance, if I have a trip from CLT-ATL-CDG, can I still book it through AF and change the domestic leg to SM?
Even better, is there benefit to using a SM number on AF flights "operated by Delta" over my FB?