Mendes appeared on "Good Morning America" on April 17, 2015, to promote the then-newly released album and performed "Stitches". On April 29, 2015, he performed the song live on both "The Ellen DeGeneres Show" and on "Conan" as the episodes' musical guest. On June 21, 2015, he performed the song at the 2015 Much Music Video Awards. Mendes sang "Stitches" again at the 2016 People's Choice Awards, followed by a performance of "I Know What You Did Last Summer" with Camila Cabello. It was also performed on The Jonathan Ross Show. Mendes performed the track on The Voice UK final on 9 April 2016. He has also performed a stripped-down version at the 2016 Billboard Music Awards. His performance was praised by several publications such as "Rolling Stone" and "TIME", with particular praise towards his vocal performance and instrumental skills. In the finals of the Voice Kids in the Philippines, Justin Alva made this the duet song and ended up in third place.