Trondheim rarely appears on the radar of American business travelers, which is precisely why the routing deserves closer scrutiny. There is no nonstop option, so business class from Salt Lake City to Trondheim requires a connection, and the most reliable path runs through Frankfurt with Lufthansa or through Amsterdam and Copenhagen with KLM and SAS respectively. Lufthansa's transatlantic segment out of SLC connects to Frankfurt, where travelers can experience the airline's evolving Allegris business class on select aircraft, before a short SAS or Lufthansa regional hop up to Trondheim's compact Værnes airport. SAS, as Scandinavia's flag carrier, offers the most culturally attuned experience on the Copenhagen-Trondheim leg, with their long-haul business class product feeding naturally into their extensive Nordic network.
Having routed through all three hubs multiple times, I find Copenhagen the most civilized connection for this itinerary — SAS's transfer process there is efficient, and their lounge access rewards business class ticket holders with a genuinely restful stopover rather than a frantic dash between terminals. Frankfurt works well too, particularly if your SLC-originating flight lands with generous connection time, since Lufthansa's FRA hub can be sprawling during peak transatlantic banks. My insider tip: book the SLC-Trondheim itinerary with the final leg on SAS rather than a codeshare partner whenever possible, since SAS controls slot priority into Værnes and irregular operations during Norwegian winter weather are handled far more gracefully by the carrier that owns the route. Summer, particularly June through August, brings not only better weather for the Trondheim approach but also more predictable connection times across all three hub cities, with May and September offering quieter airports and occasionally softer fares.
Given the multi-carrier complexity of this journey, fares fluctuate more than typical single-airline routes — setting up automated fare alerts for this specific city pair is the smartest way to catch favorable pricing windows before they close.
