Also, the ex-WAW fares have supposedly been update to allow WAW-BUD-JFK/ORD routing.
Rumors still circling about west coast destination (SFO/LAX) and perhaps some feeder flights.
Edit: flights are also available with M&M.
BUD-JFK has 75EUR in fees in C.
FRA-BUD-JFK is about 150EUR in fees compared to 300EUR for the direct flight on LH.