United Airlines Boarding : Formula for Boarding Group as of 2015. If this has changed I dont know. Group 5 has the highest chances of hand baggage checks at the gate too. Group 1 & 2 are Frequent Flyers, First & Business Class, Family with young children, Army people, etc. — Not sure if they still follow this procedure but read somewhere. Parth Parikh Aditi Patel ParikhRoosha Parikh Patel Apurva Patel
Accordingly, United divides passengers into five boarding groups. The first two are for business- and first-class passengers and elite frequent fliers. The last three are, in order, window seats, middle seats, and aisles.
Pre-boarding is available to these customers, in the following order
Customers with disabilities
Uniformed members of the U.S. military
Families traveling with children age two and younge
United Global Services® members
Premium cabins: United Global FirstSM, United BusinessFirst®, United First® and United Business®
Star Alliance Gold®
Star Alliance Silver®
Customers who have purchased Premier Access
Groups 3 – 5
Group 5 may not be applicable to United Express® flights.