No, United Premium Plus is not the same as United First or United Polaris Business Class. In 2026, Premium Plus is positioned as a "Premium Economy" product. The seats are wider than standard economy and offer more recline and a dedicated footrest, similar to what you would find in a domestic first-class seat. However, they do not lie flat. On international routes, "First Class" is replaced by United Polaris, which features pods with fully flat beds, direct aisle access, and multi-course dining. Premium Plus passengers do get several perks that economy passengers don't, such as two free checked bags, "Premier Access" (priority check-in and boarding), and upgraded meals served on real china with complimentary alcohol. Think of it as a "middle ground": it offers significantly more comfort than economy for a fraction of the price of a Polaris bed. If you see "United First" on a domestic flight, that is a different product entirely, usually representing the highest cabin on a two-class short-haul jet.