However, Swiss later decided not to proceed with key elements of its agreement with British Airways and was therefore released from its commitment to join Oneworld; it was taken over by Lufthansa in 2005 and joined Star Alliance in 2006.

No, Swiss International Air Lines (SWISS) is not a member of the oneworld alliance. In 2026, SWISS remains a prominent member of the Star Alliance, which it officially joined in 2006 following its acquisition by the Lufthansa Group. While there was a historical period shortly after its founding in 2002 when the airline considered joining oneworld and even signed a memorandum of understanding with British Airways, those negotiations eventually fell through due to disagreements over frequent flyer program integration. As a Star Alliance carrier, SWISS offers seamless connectivity and shared loyalty benefits with other major member airlines like United Airlines, Lufthansa, Air Canada, and Singapore Airlines. Travelers flying with SWISS can earn and redeem Miles & More points across this extensive global network, which serves over 1,300 destinations worldwide, rather than the oneworld network which includes carriers like American Airlines and British Airways.