Originally Posted by
RetiredATLATC
I imagine in every T&C there's something about skipping segments and the revocation of your account and miles. If you skip on the outbound leg the rest of your ticket, in most cases, will be cancelled.
From past threads people report that if done on the last segment , and if done very sporadically, you shouldn't have a problem.
They have also banned people from flying the airline again, so I wouldn't do it on an airline you use regularly.