“Leaving on a Jet Plane” was the only No. 1 hit for what group?

“Leaving on a Jet Plane” was the only No. 1 hit for what group?

The group that scored their only No. 1 hit with “Leaving on a Jet Plane” was the folk trio Peter, Paul and Mary.

Although the song was written by John Denver, Peter, Paul and Mary’s rendition became a global phenomenon. It was included on their 1967 album Album 1700, but didn’t become a hit until it was released as a single in 1969. The track flew to the top of the charts, becoming their biggest and final hit, and cemented their place in folk music history. It remains one of the most beloved folk songs of its era.

Source:

https://www.youtube.com/watch?v=0-V3EAekJCc

https://www.threads.com/@beliproduk.official/post/DOZSNmqEyHh