There's something quietly civilizing about the approach into Copenhagen — that flat, luminous Scandinavian light arriving just as your coffee does — and the journey there in business class from Chicago to Copenhagen rewards the discerning traveler with two genuinely distinct experiences worth understanding before you book. Both Scandinavian Airlines (SAS) and United Airlines serve this corridor from O'Hare, and the differences between them matter considerably. SAS operates its long-haul business class in a fully flat configuration with direct aisle access, a product that reflects the airline's Nordic design sensibility — understated, functional, and quietly comfortable in a way that doesn't announce itself. United, meanwhile, flies its Polaris business class on this transatlantic run, a product that has matured meaningfully in recent years, featuring fully flat beds with direct aisle access on its widebody aircraft and a cabin environment that suits the approximately nine-hour flight time without leaving you depleted on arrival.
The routing question deserves attention. SAS connects naturally through its Copenhagen hub, making it the cleaner option for those who prioritize a single-operator experience and smoother baggage handling into CPH. United operates via its own metal from ORD, and seasoned travelers know that O'Hare's international Terminal 5 — where United's transatlantic departures originate — benefits from an earlier-than-instinct arrival during summer peak season, particularly July and August when the terminal's premium check-in lanes absorb significant leisure-premium traffic. The sweet spot for value on this route historically falls across the summer months, May through September, when award availability and promotional fares tend to surface more reliably than during the compressed winter holiday window.
The insider move most travelers overlook: SAS frequently releases business class award space closer to departure than North American carriers do, making a late-window search — inside three weeks — occasionally more productive than months of fruitless advance scanning. Given how quickly this inventory shifts, setting automated fare alerts through a dedicated monitoring platform is genuinely the difference between catching a rare opening and reading about it afterward.
