Nuremberg's modest airport, tucked into Bavaria's industrial heartland, has no direct widebody service from the United States, which means every itinerary in business class from San Francisco to Nuremberg routes through a major European or East Coast hub before a short connecting hop. The most sensible option is Lufthansa via Frankfurt or Munich, both of which offer easy same-terminal connections to Nuremberg on regional aircraft, and both cities are now seeing Lufthansa's new Allegris business class gradually rolled out on select long-haul aircraft, a meaningful upgrade from the airline's older business product with its more private suite doors and improved bedding. United flies nonstop from SFO to Frankfurt using its Polaris business class, a solid choice with lie-flat seating and direct aisle access on most aircraft, while Delta routes travelers through JFK or Atlanta before a transatlantic partner connection, typically on Virgin Atlantic or Air France metal depending on the day.
Having flown this corridor repeatedly over the years, my strong preference is Lufthansa through Munich rather than Frankfurt whenever schedules allow — Munich's immigration and connection process is noticeably faster, and the short 45-minute Munich–Nuremberg hop on a Lufthansa CityLine regional jet rarely eats into layover buffers the way Frankfurt's sprawling terminals can. If you're arriving into Frankfurt instead, build in at least 90 minutes for the connection during winter months, when de-icing delays are common. One insider tip that seasoned flyers rarely share: booking the Munich routing during Oktoberfest weeks (late September into early October) often means fuller flights but surprisingly better business class availability on the SFO–Munich nonstop itself, since leisure travelers cluster on economy fares.
Deal-wise, this route rewards patience. January through March and October into November consistently produce the softest fares, as German business travel dips and Bavarian trade fair season hasn't yet ramped up. Given how much itineraries fluctuate between Frankfurt, Munich, and one-stop US connections, setting up automated fare alerts is genuinely the smartest way to catch a premium seat before it disappears.