There's no such thing as a nonstop from coastal Georgia to the Baltics, and anyone booking business class from Savannah to Riga needs to accept early that this is a two-connection itinerary by design. The most reliable routing runs through Atlanta on Delta metal, where you'll typically find Delta One suites with sliding doors on the transatlantic long-haul segment before transferring in Amsterdam or another European gateway onto airBaltic, Latvia's national carrier, for the final hop into Riga. Delta's partnership with KLM and Air France makes Amsterdam or Paris the natural handoff points, and airBaltic operates a modern Airbus A220 fleet on regional European routes, though it's worth noting their intra-European product is more premium economy-style comfort than a flatbed experience — the real business class investment happens on the transatlantic leg. American Airlines offers an alternative via its own hubs like Charlotte or Philadelphia, connecting onto oneworld partners for the Europe-to-Riga finish, so it pays to compare both alliance networks rather than assuming one carrier owns this corridor.
Having routed through Atlanta and Amsterdam more times than I can count, my insider tip is this: build in a minimum three-hour connection window in Amsterdam specifically, because Schiphol's passport control and the walk to the KLM Cityhopper or airBaltic gates for Baltic departures can eat far more time than the app suggests, especially midsummer when Riga-bound leisure traffic spikes. Speaking of which, September is criminally underrated for this route — the Baltic weather is still mild, business travel to Riga's tech and fintech sector picks back up after the August lull, and Delta One award space through Atlanta tends to loosen considerably.
Given the routing complexity and the fact that fares between Savannah and Riga fluctuate with both transatlantic demand and Baltic seasonal patterns, this is exactly the kind of itinerary where setting automated fare alerts pays off — letting a tracking tool watch Delta and American's transatlantic business cabins simultaneously saves you the tedium of manually rechecking multiple carrier sites every week.