"Leaving on a Jet Plane" is a song written by John Denver in 1966 and most famously recorded by Peter, Paul and Mary. The original title of the song was "Babe, I Hate to Go", as featured on his 1966 studio album John Denver Sings, but Denver's then producer Milt Okun convinced him to change the title. Peter, Paul and Mary recorded the song for their 1967 studio album, Album 1700, and Warner Bros.- Seven Arts released it as a single in 1969.
In the 1980s, the song prompted litigation involving the British group New Order. The band's single "Run 2" (1989) was the subject of a lawsuit brought by Denver, who argued that its wordless guitar break was based on his "Leaving on a Jet Plane". The case was settled out of court, and Denver subsequently received a co-writer credit for the song.