Hannover's status as a secondary German business hub means nobody flies there directly from Los Angeles, and that reality shapes every good routing decision on this corridor. There is no nonstop business class from Los Angeles to Hannover; instead, the smart money routes through Newark, Chicago, or a domestic gateway on American, Delta, or United, then continues onward via a European or transatlantic partner into HAJ. Delta typically funnels passengers through Amsterdam or occasionally via a partner hub, American works through its oneworld network with connections that often touch down in London before a short hop to Hannover, and United's Star Alliance ties make Frankfurt or Munich a logical staging point before the final regional leg. I've flown all three permutations, and the difference in comfort largely comes down to the transatlantic aircraft, not the short intra-European connector, which is almost always a narrowbody with recliner-style business seating rather than a lie-flat product.
That means your real decision is which long-haul product you want for the 11.5-hour westbound or eastbound crossing. Delta's A330neo or 767 with Delta One suites offers reliable direct-aisle access and sliding doors on newer aircraft, while United's Polaris seats on 777 or 787 equipment deliver a similar flat-bed experience with a slightly more clinical cabin feel. American's Flagship Suite, where deployed on 777-300ERs, is the most private of the three thanks to its sliding door, though on this routing you're more likely to encounter their standard 777-200 business cabin. My insider tip: build in at least a 90-minute connection in Frankfurt or Amsterdam regardless of what the itinerary suggests, since Hannover's regional flights depart from satellite gates that require additional walking or a bus transfer, and delays here are common in winter fog season.
January through March and October into November consistently produce the softest business class fares on this US-to-Germany corridor, largely because Hannover's trade fair calendar (notably CeBIT-successor events and Hannover Messe in April) pushes demand and pricing upward outside those windows. Given the multi-carrier, multi-hub complexity of this route, setting up automated fare alerts is genuinely the most efficient way to catch a premium seat before it disappears.
