Originally Posted by JOUY31
International destinations without lounge access 
8. Luxembourg
No.
Air France uses the Luxair lounge (not sure what they call it) in Terminal B as a contract lounge for the LUX-PAR flight (a codeshare operated by Luxair), and the rather nice Luxair Courtesy Lounge in the non-Schengen part of Terminal A as a contract lounge for the LUX-PRG flight (operated by CSA; code-share with AF). Lounge access on the latter flight is a bit dubious, though, when booked under the OK flight number -- the lounge access rules in the system reference only Frequence Plus and OK+ as of February of this year.
FWIW, FB Gold also gives access to the Schengen Lounge in Terminal A when flying KLM.