In 2017, Kelaiditi began her season competing at the 2017 Valentine Cup. At the 2017 Peasro World Cup, she finished 17th in the all-around and qualified to her first apparatus final in ribbon where she finished in 8th place. On May 5–7, Kelaiditi competed at the 2017 Sofia World Cup finishing 8th in the all-around ahead of Anastasiya Serdyukova, she qualified in 1 apparatus final in clubs finishing in 8th place. On May 19–21, Kelaiditi represented the individual senior for Greece at the 2017 European Championships. Kelaiditi competed at the quadrennial held 2017 World Games in Wrocław, Poland from July 20–30. On August 30 - September 3, at the 2017 World Championships in Pesaro, Italy; Kelaiditi finished 20th in the all-around finals behind Ukraine's Olena Diachenko.