Originally Posted by
asf-07
Not to harp too much on technicalities, but when someone volunteers to take a different flight and gets a voucher, this is not IDB, this is VDB.
It is far from technical. It is the essence of the DOT rule. Carriers are required to first seek volunteers because it makes for a win-win. Happy carrier avoids oversale and happy passenger who doesn't mind a reroute gets some funny money.