Innsbruck's alpine runway constraints mean there's no nonstop option from Buffalo, so booking business class from Buffalo to Innsbruck always requires a connection — and after flying this corridor repeatedly across ski seasons, I can say the routing you choose matters as much as the seat you sit in. The most reliable path runs through Newark or JFK, where United and Delta operate transatlantic widebodies before a same-alliance or partner handoff into Innsbruck's small but efficient terminal. United's Polaris business class, with its direct-aisle-access seating on 767 and 777 aircraft out of Newark, pairs well with a connection through Munich or Frankfurt on Austrian Airlines, whose Boeing 777 and A321 business cabins feel distinctly European in their understated comfort. Delta flyers should route via JFK or Boston into a European hub, often Amsterdam or Paris, before a regional partner completes the journey into INN's compact single-runway airport, which sits dramatically close to the mountains and rewards daylight arrivals for the views alone.
Austrian Airlines is the carrier worth prioritizing on the final leg whenever schedules allow, since their short-haul business class includes blocked middle seats and a proper hot meal service that outclasses most intra-European business products — a detail seasoned travelers know but rarely see written down. Winter ski season (December through February) and summer hiking months (June through August) see the tightest business class availability into Innsbruck, which is precisely why the shoulder months of January through March and October through November — after New Year's crowds thin and before summer demand builds — consistently produce the softest fares and the best award space on both United and Delta's transatlantic metal.
My insider tip: rather than searching BUF-INN directly, search availability into Munich or Zurich separately, then check Austrian's regional connector — mixed-cabin itineraries booked this way often reveal premium seats invisible in a single through-search. Given how erratic pricing on this route can be, setting up automated fare alerts is the smartest way to catch these fleeting business class windows before they close.