Trondheim rewards the patient traveler, and after a decade of routing readers through Scandinavia's back doors, I can say with confidence that business class from Miami to Trondheim always involves a connection—there is no nonstop option on this pairing, and the smartest itineraries route through Copenhagen, Amsterdam, or Frankfurt depending on which of the three carriers serving this corridor you favor. SAS, Lufthansa, and KLM each offer viable paths, with SAS's Copenhagen hub arguably the most logical given its short onward hop to Trondheim on regional Scandinavian metal. Total journey time hovers around 9.5 hours of actual flying, though with connections you should budget closer to 13-15 hours door to door.
My preference leans toward the SAS routing via Copenhagen, where their long-haul business class product—flat-bed seats with direct aisle access on their A330/A350 fleet—makes the transatlantic leg genuinely restful before the final domestic-style hop north. Lufthansa's Frankfurt connection is worth considering if you're loyal to Star Alliance miles or want to experience their newer Allegris business suites on select long-haul aircraft, though not all Frankfurt-bound aircraft have been retrofitted yet, so it pays to check your specific equipment before booking. KLM's Amsterdam routing offers strong World Business Class seating and arguably the most efficient connection window at Schiphol, a hub I've always found easier to navigate than Frankfurt during peak summer congestion. My insider tip: fly into Trondheim's Værnes airport in the early morning if possible—Norwegian domestic connections from Copenhagen and Amsterdam tend to cluster in the AM, and arriving before midday gives you daylight to acclimate, especially valuable during the endless-light summer months.
Late spring through early autumn—May through September—is when this route delivers the best combination of award availability and manageable fares, since Norway's fjord country draws premium leisure demand alongside business travelers. Given the routing complexity and fluctuating fuel surcharges on Scandinavian carriers, setting up automated fare alerts for this specific city pair will save you from overpaying when award space or discounted business fares briefly surface.
