See the part for Involuntary bumping or Boarding
https://www.united.com/web/en-US/con...age.aspx#sec25
it is part of the Contract of Carriage
Also here in DOT or Transportaion.gov. for USA
https://www.transportation.gov/airconsumer/fly-rights
Last edited by GP571HERO; 13th Apr 2017 at 19:40.
Reason: additions