CSA Czech Airlines as the 5th member in April of the following year.

The alliance saw the joining of CSA Czech Airlines on 25 March 2001; Alitalia entered SkyTeam on 27 July the same year, with its membership scheduled to become effective 1 November that year. On 30 September 2001, the alliance received KLM's application for membership, following the airline's plans to create a leading airline group with Air France. In 2003, Delta's