Urban announced that the lead single for his fifth studio album would be titled "Sweet Thing". This song became his 10th number one hit. Capitol Records released the album, Defying Gravity, on 31 March 2009. The second single, "Kiss a Girl", was released in March 2009. Urban performed this song on American Idol, during the season 8 finale, as a duet with eventual winner Kris Allen. "Only You Can Love Me This Way", the third single, went to number one. The fourth single, "'Til Summer Comes Around", went to number three. The fifth and final single "I'm In" is a cover of a song by Radney Foster, taken from the same album as "Raining on Sunday" was. This song was also recorded by The Kinleys, whose version had been a Top 40 single in 2000. Urban's rendition went to number two. Between the two, Urban also made a guest appearance on then-labelmate Emily West's single "Blue Sky," which charted at number 38.
Urban's 2009 Escape Together tour, supporting the Defying Gravity album, featured many big-name opening acts, such as Taylor Swift, Sugarland, and Jason Aldean. On 27 June 2009, Urban filmed a video for the song, "Only You Can Love Me This Way", at the Wells Fargo Arena in Des Moines, Iowa.
In 2009, Urban was also a judge for the 8th annual Independent Music Awards to support independent artists' careers.