Bergen rarely enters the conversation when Americans plan a Nordic business class itinerary, and that's precisely the opportunity savvy travelers should exploit. There is no nonstop option for business class from Denver to Bergen, so the routing goes through one of three credible hubs — Copenhagen via SAN, Frankfurt or Munich via Lufthansa, or Amsterdam via KLM — each requiring a connection before the short hop into Bergen's compact, easy-to-navigate airport. In practice, I've found the SAS routing through Copenhagen the most seamless for this itinerary, since SAS's own regional aircraft to Bergen keep you within one alliance and one terminal ecosystem rather than switching carriers at the last leg.
Of the three, Lufthansa's long-haul segment from Denver typically offers the most modern hard product, particularly if you land an Allegris-configured aircraft with its suite-style seating and adjustable privacy panels — though Lufthansa is still rolling this fleet out, so it's worth checking your specific aircraft type before booking rather than assuming Allegris is guaranteed. SAS flies Airbus A330s and A350s on transatlantic routes with fully lie-flat seats in a 1-2-1 configuration, a reliable if understated product that pairs well with their efficient Copenhagen connections. KLM's World Business Class on its 787 and A330 fleet rounds out the options, and Amsterdam remains one of Europe's most efficient connecting hubs if you have a couple of hours to spare — Schiphol's transfer security is fast, and KLM's Crown Lounge is worth the layover on its own merits.
Summer is unquestionably the season to target this route, both for weather — Bergen's famous rain eases somewhat between May and September — and for fare softness, as leisure demand to Norway spikes around the fjords in July while business-heavy fares dip in the shoulder months of May, June, and September. My insider tip: book the Copenhagen-Bergen connector as early in the morning as possible, since SAS's regional schedule to Bergen thins out by early afternoon and misconnections can strand you overnight. Given how thin premium inventory is on this niche routing, setting up fare alerts is the smartest move you can make before committing to a date.