Originally Posted by
irishguy28
That's why holding duplicate frequent flyer accounts with different airlines within a single alliance is not always a good idea. If you're travelling infrequently, or are not specifically targetting having status with two different airlines for reasons related to frequent travel, it's best to have only a single (well-chosen, based on your typical travel profile) frequent flyer program per alliance, and to place all the miles from that alliance in a single program.
Not necessarily. For Example AF program allows one way tickets whicg delta does not so that is an advantage. Also AF has promos that I have used for half the miles in business on one way awards. Same case for United and SQ. I have tons of miles on United but I still keep miles in SQ because I can redeem SQ business and first awards via Krisflyer and these awards are almost always not available on United