Condor fly FRA-LAS (Las Vegas) during the summer and last year through the winter with tickets from DUS so I presume also Munich (LH flight) . Bookings possible from next week (7th =/-) for the winter according to the website . Service is the LH service and Comfort Class ( Business ) is the old LH Bus. Class for around e2200 return - don't know Economy prices . LAS also easier than LAX - less pax and a regular SouthWest connection for next to nothing .
Just my point of view having tried all the combinations .