This weekend, United Airlines will realign some of its premium booking codes, partly in preparation of the launch of its Premium Plus premium economy cabin. Part of the update will merge codes for United Polaris first class—which had used F, FN and ON codes—into the United Polaris business class codes. Under the new structure, premium cabin booking codes will be:
- For tickets purchased: J, C, D, Z and P
- For tickets claimed using rewards: JN, ZN, IN and I
- For upgrades: PN and PZ
While United is implementing the change—between 6 p.m. Eastern on Friday and 2 a.m. Eastern on Saturday—agents and travelers will be unable to select and change seats for travel on or after Oct. 22.