UnitedFirst From United States of America, joined Jun 2001, 478 posts, RR: 2 Reply 2, posted (9 years 11 months 3 days 6 hours ago) and read 2020 times:
It's no different from traditional United Economy service. You simply receive improved legroom. The only way to be seated in Economy Plus, though, is:
1 to have Premier, Premier Executive, 1K, UGS, or Star Gold status. 2 to be traveling with/have your ticket booked by an elite-status customer, as described above. 3 to pay a full-fare Economy Class ticket. 4 to ask for it specifically at check-in (if you check-in early enough, this often works).
It is currently available onboard all United mainline equipment, save for the 767-200s and selected International 3-class 777-200 equipment.