Luxembourg's tiny Findel Airport rarely appears on the radar of premium travelers, which is precisely why the route rewards those who plan carefully. There is no nonstop option for business class from Los Angeles to Luxembourg, so the practical routing runs through Frankfurt, Munich, or occasionally Amsterdam and Paris via partner metal, with Lufthansa's transatlantic service forming the backbone of most itineraries. Delta, as Lufthansa's transatlantic joint-venture partner, sells the same route heavily, while Luxair operates the short intra-European hop into LUX itself. The most reliable connection I've used repeatedly is LAX–Frankfurt on Lufthansa, followed by a quick Luxair or Lufthansa regional flight into Findel — a routing that keeps total journey time close to 14-15 hours including the connection, against roughly 11 hours of pure flying time.
On the long-haul leg, Lufthansa's aircraft mix varies, so it's worth checking whether your specific flight has been upgraded to the Allegris business class suite with its sliding door and adjustable panels, versus the older lie-flat product still flying on many 747-8 and A340 rotations to Frankfurt. Delta-operated segments, when routed through Amsterdam or another European gateway, typically feature Delta One suites with reliable, consistent hard product. Frankfurt itself is a strong connecting hub for this journey — arrive with at least 90 minutes of buffer, since immigration and security recheck for non-Schengen arrivals can eat into tight layovers, especially during the winter snow season. My insider tip: book the Luxair connecting flight as a separate ticket only if you're an experienced connector comfortable with self-transfer risk, because through-fares on Lufthansa's own system tend to protect you better if the first leg runs late.
January through March and October into November consistently produce the softest business class fares on this corridor, largely because Luxembourg's financial-sector travel demand dips outside spring and autumn conference seasons. Given how thin inventory can be on Lufthansa's premium cabins to this underserved market, setting up fare alerts for LAX-LUX business class is the smartest way to catch these seasonal dips before they disappear.