Yes, United First Class seats definitely recline, and in 2026, the experience has been upgraded on most domestic planes. A standard United First seat offers approximately 5 to 6 inches of recline, which is significantly more than the "locked" or 2-inch recline found in Economy. On United's newest 2026 fleet (including the A321neo and 737 MAX), the seats feature an "ergonomist-designed" recline that cradles the passenger, along with winged headrests and an adjustable leg rest in some configurations. For International First/Polaris Business, the seats are "Lie-Flat," reclining a full 180 degrees into a 6-foot-6-inch bed. A high-value peer tip: even in Domestic First, the recline can be "intrusive" for the person behind you if they are trying to work on a laptop, so always give a quick look back before pushing your seat all the way down. For a "win" on comfort, United's 2026 seats also include wireless charging and Bluetooth audio, making that "reclined" time more productive and enjoyable.