Passengers voyaging with United Airlines can board the flight quickly due to its boarding group service. This feature permits one to board their flights systematically and conveniently by avoiding congestion at the airport gate. Moreover, United Boarding Groups is divided into seven different groups, including pre-boarding. Additionally, details on those are listed below.
Pre-boarding: Passengers traveling with children 2 years of age or younger, such as Global Services and Premier 1K status flyers.

Group 1- Passengers on United Polaris, United First, and United Business flights and all Gold passengers in Star Alliance.

Group 2- Travelers with Premier Access or who have purchased Priority Boarding, and also Premier Silver Flyers.

Group 3—This includes passengers who have selected Economy Plus and United Economy and emergency exit seats and selected window options.

Group 4- Passengers who have selected middle seats or those who have Economy Plus and United Economy fares.

Group 5- All passengers who travel in the aisle of Economy Plus or United Economy.

Group 6—This applies to passengers with basic economy fares, and no passengers have boarding groups listed on their flight tickets.

For more information about the United boarding group, flyers can visit its official website or read the blog mentioned by Group Travel Airlines.
Read More: https://shorturl.at/RSZk5