All of the LH group airlines do (LX, OS) plus LOT, Iberia, TAP and ITA. If you are willing to accept some routing inconvenience, Turkish and Aeroflot are options as well.
Iberia and Aeroflot are the only options for transporting more than one cat in one carrier (provided weight restrictions are met).
Edit: If you don't mind going via Canada, Air Canada also allows pets in the cabin
Last edited by bhomburg; Nov 12, 2021 at 12:34 pm