You will find a list of airports where you as a SWISS passenger have access to the Lounges under Lounges worldwide.
Frequently asked questions: Lounges
Access to SWISS Lounges and partner Lounges worldwide is only available to passengers in certain booking classes and to status passengers of the Miles & More program. Please go to Lounges for information on the subject of access authorization.
Whether you are allowed to take other people, and how many, into a SWISS Lounge depends on your booking class. You will find further information on this subject under Rules for companions.