Edelweiss Air (WK, Zurich) will retrofit the cabins of its entire A350-900 fleet by July 2027, with the first of six aircraft set to be completed by December 2026. The airline will increase the number of economy seats from the current 249 to 259, but will add more legroom. Premium economy will decrease from the current 63 to 28 seats in a 2-3-2 layout, while business class seating will increase from 30 to 32 (including four business suite seats). While Edelweiss inducted the A350s in 2025, the aircraft are second-hand units and remain in the configuration of previous operator LATAM Airlines Brasil.