In 1995 Swissair, Austrian Airlines and Delta Air Lines scheduled service began on a Vienna-Geneva-Washington DC routing on March 26 in a trilateral joint-venture operation.
Swissair, Austrian Airlines, Sabena and Delta Air Lines were granted antitrust immunity by the US authorities, enabling them to collaborate more closely without violating that country's strict legislation on anti-competitive practices.
In 1997 Austrian Airlines, Sabena, Delta Air Lines and Swissair launched "Atlantic Excellence", an extensive collaborative partnership with joint networks and operations between Europe and North America.
The CEOs of Swissair, Sabena, Austrian Airlines and Delta Air Lines decide to disband the Atlantic Excellence alliance on August 5, 2000.
Swissair, Sabena and American Airlines announced the conclusion of a ten-year cooperation agreement, and applied to the US Department of Transportation for antitrust immunity (granted in May 2000).