There's no nonstop route between Palm Beach and Norway's third city, which means the real strategic decision for travelers booking business class from West Palm Beach to Trondheim happens at the connection point in Europe, not at the departure gate. I've routed this itinerary through Amsterdam, Frankfurt, and Copenhagen enough times to have firm opinions: KLM's transatlantic World Business Class out of PBI connects smoothly to their Trondheim service via Schiphol, and the airport's compact single-terminal design makes tight connections far less stressful than Frankfurt's sprawling layout. Lufthansa routes through Frankfurt with their evolving Allegris business class now appearing on select long-haul aircraft, though reliability on which cabin you'll get still varies by aircraft rotation—worth checking your specific equipment before booking. SK (SAS) offers the most culturally logical link, connecting through Copenhagen with their A330 or A350 business class before a short intra-Scandinavian hop up to Trondheim, and frankly, SAS's Nordic sensibility makes that final leg feel like a natural extension of the journey rather than an afterthought.
The real insider move here is timing your Copenhagen or Amsterdam layover deliberately—both hubs have excellent business lounges, but few travelers realize that a 2.5-3 hour connection window in CPH lets you clear security, shower, and still make the short regional flight into Trondheim without ever feeling rushed, unlike the frantic 90-minute connections airlines often price as "convenient." Trondheim's Værnes Airport is small and efficient, so arrival is painless regardless of carrier—your energy should go toward optimizing the outbound connection instead. Summer (May through September) brings not just Norway's dramatic long daylight hours and accessible fjord scenery, but also more predictable fare patterns on this route, as Scandinavian leisure demand and business travel to Trondheim's tech and energy sectors both peak.
Because this itinerary involves multiple carriers and connection points with fluctuating award and paid business availability, I'd strongly recommend setting up automated fare alerts rather than manually checking each airline's site—pricing on this specific PBI-TRD corridor via KLM, Lufthansa, or SAS shifts often enough that a tracked alert will catch dips you'd otherwise miss.