Salzburg's small alpine airport has no direct widebody service from the American Midwest, which means booking business class from Cleveland to Salzburg always involves a strategic connection — and after routing this itinerary dozens of times for readers, I can say the Munich gateway via Lufthansa Group partner Austrian Airlines (OS) is the smart play, with the short hop from MUC to SZG feeling almost incidental after a proper lie-flat crossing. United and Delta both offer viable paths too: United typically routes through Newark or Chicago with its Polaris cabin on the 767 or 777, while Delta connects via JFK or Atlanta into its A330 or 767 Delta One suites before you transfer onto an Austrian regional jet for the final short leg into Salzburg's compact single-runway airport.
The nine-hour transatlantic segment is really where this journey lives or dies, and I've found Delta's A330-900 Delta One suites — with their sliding privacy doors — offer the most consistent hard product for this itinerary, though United's Polaris seating on the 777-300ER runs a close second, especially with the newer suites now rotating onto some JFK and Newark departures. My insider tip: skip the temptation to book the absolute shortest connection time in Munich or Frankfurt — Austrian's SZG regional flights are notoriously light on gate-to-gate buffer during peak ski season (December through February), and a 90-minute connection window has burned more than one reader I've corresponded with. Instead, build in at least two hours if you're transferring through MUC in winter, and use the Lufthansa Business Lounge there to decompress before the final descent into the Alps.
Deal-wise, this is a shoulder-season route through and through — January, February, and March reward patient shoppers with softer transatlantic business fares (before ski traffic peaks), while October and November offer similarly favorable pricing as summer festival crowds thin out ahead of the holidays. Given how volatile fares on this multi-carrier itinerary can be, especially with fluctuating fuel surcharges from the Lufthansa Group, setting up automated fare alerts is genuinely the smartest way to catch a rare dip before it disappears.