Prishtina On 13 September 2013. Kelmendi made his debut with
Prishtina in a
Football Superleague of Kosovo match against
Gjilani after coming on as a substitute at 29th minute in place of
Liridon Latifi.
Trepça'89 On 22 July 2017. Kelmendi signed to
Football Superleague of Kosovo side
Trepça'89.
Skënderbeu Korçë On 10 August 2017. Kelmendi completed a transfer to Skënderbeu Korçë by signing for the next three seasons and received squad number 9. One day later, the club confirmed that Kelmendi had joined on a permanent transfer. On 6 September 2017. Kelmendi made his competitive debut for the club in the first leg of
2017–18 Albanian Cup first round, scoring the opener in an 8–0 thrashing of
Adriatiku Mamurras. Later, on 29 November 2017. Kelmendi was on the score-sheet again in this competition, where he netted the lone goal of the match against
Besëlidhja Lezhë for the second round. He made his first Albanian Superliga appearance on 22 December by entering in the last minutes of the 3–1 home win over
Teuta Durrës.
Loan to Trepça'89 On 20 January 2018, Kelmendi was sent on loan at Football Superleague of Kosovo outfit KF Trepça'89 for the remainder of the season.
KF Llapi On 17 June 2018, Kelmendi signed for
KF Llapi on a 2-year deal.
KF Flamurtari On 27 December 2018, it was announced that Kelmendi had signed with
KF Flamurtari. ==Career statistics==