"At Last" was included in the set list of Beyoncé's third concert tour I Am... World Tour (2009–2010). It was performed in the penultimate section of the concert when Beyoncé appeared on stage wearing a long gold sparkly gown with lights at her from all around the arena. During the performance, footage of her performing the song at Obama's inauguration, video images of civil rights era footage, and snippets from her performance of the song in the movie "Cadillac Records" were all shown on the screens behind her. A writer of "South Florida Times" praised the video montage saying that it was "beautifully" edited and added that Beyoncé made a "perfect melding" of past and present with the performance of the song. "Rolling Stone"'s Caryn Ganz commented that the performance of the song showed a "torchy... display of vocal gymnastics". Jay Lustig of New Jersey On-Line commented that the performances of "At Last" were "as riveting as anything that had come before" during the concert and noted that "Few pop or R&B divas could be as compelling with all the visual hoopla stripped away." Barbara Ellen of "The Observer" wrote that there was an interesting segment during the performance of "At Last" on the tour. Alice Jones of "The Independent" wrote that the live rendition of the song was one of the "big-hitters" during the night. A writer of "Evening Chronicle" wrote that he was "blown away" by the performance while Mike Ross of the website Jam! added that Beyoncé proved she could sing traditional R&B if she wanted with the cover of "At Last". Jay Hanna of "The Sunday Times" described the performance of the song as truly inspired with Beyoncé simply standing and delivering the song. Jim Farber of the "Daily News" gave a mixed performance for the song, noting that "Her run at 'At Last' still lacks the terrific sense of relief Etta James manages effortlessly."