Hello, when I flew with united airlines seats, I discovered that their seats were reasonably comfortable for a lengthy trip. The legroom in standard economy was adequate, and the foam felt supportive. I valued the seatback screens for entertainment and the adjustable headrests. The seating, while not luxurious, was clean and well-kept. All in all, for the cost of my ticket, I found my experience with United Airlines seats to be satisfactory and without issue.