Nuremberg's modest airport, tucked into Bavaria's industrial heartland, has never hosted a nonstop widebody from the American Midwest, and it likely never will—which means booking business class from St. Louis to Nuremberg is fundamentally an exercise in choosing the right connection rather than chasing a mythical direct routing. The reality is that all three major carriers serving STL—American, Delta, and United—route passengers through their transatlantic gateways before a short regional hop completes the journey into NUE. American typically funnels travelers through Philadelphia or Charlotte before a Frankfurt or Munich connection; Delta leans on its Atlanta and Detroit hubs into Amsterdam or Paris; United's strength lies in its own Frankfurt and Munich gateways from Newark or Chicago, with onward service to Nuremberg on Lufthansa metal. Total journey time, including connections, generally lands between 13 and 16 hours depending on layover length, even though the transatlantic long-haul segment itself runs close to 10 hours.
Having flown this corridor repeatedly, I'd steer discerning travelers toward United's Polaris business class on the transatlantic leg when routed through Newark and Munich—the lie-flat seats and dedicated Polaris lounges in Newark and Chicago make the ground time bearable, and Munich's proximity to Nuremberg (about 90 minutes by train or a quick regional flight) often beats a Frankfurt connection for onward ease. Delta's partnership with Air France-KLM means you may find yourself in a KLM World Business seat out of Amsterdam, a solid product though not class-leading. My insider tip: if your itinerary connects through Munich, build in enough buffer to take the direct train from the airport into the city center rather than risking a tight regional flight to Nuremberg—Deutsche Bahn's regional service is reliable and scenic, and it sidesteps the risk of misconnecting on a puddle-jumper.
January through March and again in October and November consistently offer the softest fares on this route, as Bavarian trade fair season and Christmas market crowds bracket the shoulder periods. Given how fragmented and connection-dependent pricing can be across three different alliance structures, setting up automated fare alerts is the smartest way to catch a premium-cabin deal before it disappears.
