Luxembourg remains one of Europe's quieter luxury gateways, which is precisely why seasoned business travelers have learned to route through Frankfurt or Paris rather than wait for elusive nonstop capacity. There is no direct nonstop service on this pairing today, so business class from Charlotte to Luxembourg typically means connecting via Lufthansa's Frankfurt hub or Air France through Paris-Charles de Gaulle, with Luxair (LG) handling the short intra-European hop into Luxembourg Findel Airport. Charlotte Douglas offers a straightforward Star Alliance and SkyTeam departure experience, and American Airlines' domestic-partner ticketing with Lufthansa makes booking the CLT-FRA-LUX routing relatively seamless for the transatlantic leg.
Lufthansa's long-haul aircraft on the Charlotte-Frankfurt sector increasingly feature the new Allegris business class suite with sliding doors, though older 747-8 and A330 configurations with the traditional lie-flat seat still appear seasonally, so it's worth checking your specific aircraft type at booking. Air France routes through Paris typically deploy their business class product on the A350 or 777, both offering fully flat seats and Air France's refined onboard service, a reasonable alternative if Frankfurt connection times don't align with your schedule. My own preference after dozens of these connections is Frankfurt for its efficiency: arrive with at least 90 minutes for the connection, use the Lufthansa Business Lounge in Terminal 1 to reset before the short Luxair or Lufthansa regional hop, and request an aisle seat near the front of the connecting aircraft since Findel's gate-to-curb process moves quickly and rewards an early exit.
Deal-wise, this route rewards patience rather than proximity to peak summer travel. January through March and again in October and November consistently produce softer transatlantic business fares as corporate travel to Luxembourg's finance and EU-adjacent sectors dips, and airlines discount accordingly to fill premium cabins. Because pricing on this three-airline, two-connection route fluctuates more than more heavily trafficked corridors, I'd strongly recommend setting up automated fare alerts so you can pounce the moment Lufthansa or Air France release a favorable business class fare into Luxembourg.
