When Iris was released, it was not permitted to chart until it became a commercial single. It only reached number 9 in the charts when it was released as a single. If it had been released earlier, it would have been one of the biggest number one hits of the decade.
On September 26, 2011 Iris stormed to number one on the UK iTunes chart after it was performed by a singer on the television show The X Factor.
Later that week Iris reached to number 3 on the UK charts, the highest position since it release.
According to a news article "Iris has been a steady seller in Great Britain since its original release in 1998, enjoying more than 433,000 in sales, and racking up more than 30 million views on YouTube."
In that same article John said: "I love the fact that young artists are inspired to sing this song. It opened a lot of doors for us. To see it hit No. 1 in the U.K. and connect with a growing new audience is cool."
On November 21, 2011 Iris was performed by John Rzeznik in a duet with Taylor Swift. John Rzezik was special guest at the first of two Taylor Swift concerts at Madison Square Garden in New York City.