Originally Posted by
oliver2002
You have upfare, ie pay a higher fare to get into D. No other way. The cost will be less if you try to upgrade via myoffer or the upsell on LH.com
I would second that. P --> D will be a steep upfare. I'd check what lufthansa.com is offering to confirm F - $1300 is not too uncommonly seen TATL these days. Myoffer hasn't been working for me on 016 tickets for a long time, not sure why.