"Homesick" was performed as the encore during Lipa's Self-Titled Tour (2017–18). She also performed the song with Martin in 2017 during Coldplay's A Head Full of Dreams Tour, where she served as the opening act. On 4 November 2017, Lipa performed the song on "Later... with Jools Holland", alongside "Be the One" (2015) and "New Rules". On 8 December 2017 and 3 February 2018, she performed it alongside "New Rules" on "Sounds Like Friday Night" and "Saturday Night Live", respectively. The latter performance was met with mixed reviews, however critics judged it to be a successful encore. On 20 May, Lipa performed the song at the 2018 "Billboard" Music Awards as part of the Xfinity Encore Performance. Lipa performed the song as a duet with Pablo Alborán at the LOS40 Music Awards 2018, on 2 November of that year.