Originally Posted by
flyerCO
All this allows is
If the fare is higher (and one-ways with few exceptions are) then you legally will be required to pay the higher fare. Unless you send in a refund request though they're not going to catch you flew on a fare you didn't qualify for. It's also in your interest not to request the refund because DL could file criminal charges if you refuse to pay the correct one-way fare. Why? It's against federal law to fly on a plane without a VALID ticket. A ticket bought contrary to the rules of the fare is NOT a VALID ticket.
Scare tactics much? Delta is going to file criminal charges against someone for a measly few hundred dollars? It's not worth them going through the effort to try and prove he never had any intention of flying the second leg, in these scenarios it's very likely something could have come up and the person had to change their plans.