Yes, if you purchase an Economy Plus seat on United Airlines, you have the right to choose your specific seat at the time of booking or anytime before check-in, subject to availability. Economy Plus is not a separate cabin like Premium Plus; rather, it is a section of the main economy cabin that offers 5 to 6 inches of extra legroom. If you have "Premier" elite status with United (Gold, Platinum, or 1K), you can often select these seats for free at the time of booking. Silver members can select them for free at check-in. If you do not have status, you must pay an upcharge, which varies by the length of the flight. It is important to distinguish this from "Basic Economy," where you cannot choose a seat at all without paying a separate fee. In Economy Plus, you are paying for the "location" and the "space," and the ability to pick a window or aisle seat in those rows is a standard part of that purchase agreement in 2026.