LEGO's hometown doesn't get its own nonstop from the Nevada desert, and that's precisely what makes routing intelligence so valuable here: there is no direct service between Las Vegas and Denmark, so business class from Las Vegas to Billund always means a transatlantic connection, typically routed through Copenhagen, Frankfurt, or Amsterdam depending on which of the three carriers serving this corridor you choose. SAS is the natural choice given its Scandinavian focus, connecting through Copenhagen with a short onward hop to Billund on a regional jet — a routing I've used repeatedly because it minimizes the layover stress after a long westbound crossing. Lufthansa funnels traffic through Frankfurt, where their long-haul business product varies by aircraft — older 747-8s and A340s still run some LAS-adjacent US routings, so check your equipment before booking if a flat-bed matters to you. KLM's Amsterdam hub offers the tightest banked connections in my experience, with their World Business Class cabin on the 787 and A330 fleet delivering a consistently comfortable red-eye experience into Europe.
The real insider move is booking the SAS-operated Copenhagen-Billund segment as late in the evening as schedules allow, since Billund's small airport empties out fast and immigration lines that plague larger EU gateways simply don't exist there — you'll clear customs before your bags hit the belt. Frankfurt and Amsterdam, by contrast, demand a minimum 90-minute connection buffer during peak summer months when both hubs run near capacity; I've missed a tight Amsterdam connection once and won't repeat that mistake. Seasonally, May through September rewards patient shoppers, as Scandinavian carriers push promotional business fares to stimulate summer leisure traffic to Denmark's Lego House and Billund's design-tourism economy, while November through February sees premium cabins price up due to limited capacity and holiday demand.
Given how thinly this route is served in premium cabins, fare volatility is real — availability on SAS's award seats and KLM's discounted J fares can shift within days. Setting up automated fare alerts for this specific city pair is the smartest way to catch a fleeting sweet spot before it disappears.
