PremPlus paid fares are O, A, R (R is the most discount)
RN is "saver" PremPlus award space (not sure if this actually available)
ON is "everyday" PremPlus award space
RN is also used for Economy to PremPlus upgrades
Last edited by WineCountryUA; Aug 19, 2021 at 12:48 pm
Reason: (not sure if this actually available)