Originally Posted by
FullFare
.... I booked D-fares so as to use my SWU's to elevate to the F cabin. Spent good money ($6K per tkt). Seats and all are worked out, but the booking code shows the dreaded "ON"......
That is actually correct D to 3-class F upgrade is ON, as is award bookings into 3 class F.
R is the correct code for economy to next class ( Business or Domestic F).