Uzbekistan Airways since mid-April 2018 expanded recently implemented codeshare partnership with Turkish Airlines, which now covers service to Spain. Approximately from 16APR18 (or earlier), planned new codeshare routes include the following.
Uzbekistan Airways operated by Turkish Airlines
Istanbul Ataturk – Barcelona
Istanbul Ataturk – Madrid
Uzbekistan Airways in late-Nov 2017 also expanded codeshare partnership with Alitalia, covering Italy – Spain service (Barcelona / Madrid).