United’s 737-800s are narrow-body aircraft operated on a mix of short, medium, and long-haul segments in the domestic and North American markets. The 737-800 accommodates 166 passengers in a two-class configuration.
There are three configurations of the 737-800 in United’s fleet. Check your reservation to confirm the aircraft type. United denotes the different configurations as Version 1, Version 2, and Version 3.