Originally Posted by
campbe79
It's not bookable on the site, but I called the DM line and they booked it with no problem. It was AMS - TXL, round trip. KLM doesn't put the fare class on the mobile boarding pass though (or I can't find it), so unfortunately I know know it. Delta shows it as an X fare class in my receipts.
There are no 'X' fares listed under the KL earnings chart on delta.com
"Class Exclusions: If a class is not listed, no miles are earned."