Originally Posted by
Loverboy
I contacted Austrian on the chat to ask what fare class I got booked into, and she said It was P (btw, during the upgrade only D class was open for sale, don’t know why booked into P).
Instant upgrades from Economy always book into P on LH/OS/LX. I vaguely recall that full Y fare might book into Z, but not sure about that - I've never had a Y fare