Four airlines cover this route with genuinely different products. British Airways connects through London Heathrow with its Club Suite — a proper suite with a closing door, 1-2-1 layout, and White Company bedding that's a real upgrade from BA's older cabins. Lufthansa routes through Frankfurt on its newer Allegris business class, found on select A350s, with individual suites and the kind of precise, no-nonsense service Lufthansa is known for. KLM flies through Amsterdam with a solid 1-2-1 lie-flat product, Delft Blue houses as an amenity, and generally reliable connection times at Schiphol. Delta, working through Atlanta or Minneapolis, offers its Delta One Suite with a closing door and Tumi amenity kits — a good option if you'd rather start the long-haul segment domestically and connect in Europe afterward. Austin to Bari business class travelers tend to gravitate toward BA or Lufthansa for the shorter European connection time into Bari's compact airport, but Delta's domestic-first routing appeals to those who want familiar service on the long transatlantic leg.