I've seen dated discussions on best freq flyer (FF) programs, but hoped to get an updated opinion for folks.
I am based in SFO and will be traveling to Tokyo (NRT) periodically in b-class so I wondered what FF program should I get married to. I am a member of them all but have historically flown whichever my company demanded (AA or UA). I since have used down miles and am interested in what FF program would earn the most for intl b-class flights and have the best policies for mileage use.
Anyone have thoughts?