Legends of Tomorrow
In the spin-off series, Legends of Tomorrow, Sara is recruited by Rip Hunter to a time travelling team of rejects aimed at defeating the immortal villain Vandal Savage. Before she departs, Laurel gives Sara the White Canary name and outfit to signify her new start. Over the course of the first season, Sara continues her battle with bloodlust and sets in motion the events that will lead to her own rescue by Nyssa. While she romances or flirts with numerous people throughout history, among them a younger Martin Stein and a closeted lesbian 1950s nurse, she develops a budding relationship with teammate Leonard Snart, who bonds with her due to their common history as killers and desire to redeem themselves. Though Sara is slow to return his feelings, Snart eventually hints at his love for her and expresses a desire to have a future with her near the end of the season after they destroy the Occulus. Snart ends up sacrificing himself to destroy the Occulus in Ray Palmer's place, and Sara kisses him for the first and final time before leaving with the rest of the team before the Vanishing Point explodes. Sara subsequently mourns Snart's death and admits that he died a hero. The Legends return to 2016 a few months after they left, where Sara learns from her father that Laurel was killed by Damien Dhark. Sara confronts Rip about deliberately returning her to after Laurel's death to stop her from trying to save her, but Rip tells her that Laurel's death is a fixed point in time, and attempting to change it will only get herself and her father killed.
In season two, Sara becomes captain of the timeship Waverider and leader of the Legends following Rip's disappearance. She mercilessly hunts Darhk throughout history before accepting that she cannot bring Laurel back due to the delicacy of time. In the "Invasion!" crossover event, Sara and the Legends return to 2016 to aid Team Arrow, Team Flash, and Earth-38's Supergirl in repelling the Dominators' alien invasion. She subsequently learns of the subtle changes in the timeline due to Barry Allen travelling back in time to save his mother from Eobard Thawne out of grief for his father's death at the hands of Zoom, subsequently creating and undoing the Flashpoint timeline which has alerted the Dominators, and scolds Barry for his carelessness, while still using her own experience losing Laurel to sympathize with Barry. In the second-season finale, Sara is forced to use the Spear of Destiny to save reality from the Legion of Doom. While tempted to rewrite her own tragic history, the Spear briefly reunites Sara with a projection of Laurel, who encourages Sara to do what is right and make peace with her death. Sara then chooses to render the Spear itself inert, foiling the plans of Thawne himself (whose death as a result of Eddie Thawne's suicide had also been undone due to Barry creating and reverting Flashpoint) and allowing him to be killed by the Black Flash, who has been hunting him all season.
In season three of Legends, Sara continues to lead the Waverider crew as they track down and repair anachronisms throughout time, working in an antagonistic partnership with Rip Hunter's new bureaucratic organization, the Time Bureau. In the four-part crossover "Crisis on Earth-X", Sara travels to 2017 to attend the wedding of Barry Allen and Iris West, where she has a one-night stand with Supergirl's adoptive sister Alex Danvers. The assembled heroes work together to repel an invading Nazi army from the alternate world of Earth-X. While confronting the demonic entity Mallus alongside John Constantine, Sara and Constantine hook up, despite her ongoing romantic tension with Time Bureau agent Ava Sharpe. Ava and Sara begin dating in subsequent episodes, but break up after Sara is temporarily possessed by Mallus through the death totem and reasons that, given her history with death and destruction, she poses a danger to Ava. Despite this setback, they soon get back together, with the two shown to be in a stable relationship by the time of the Legends removing Paul Revere from the height of Beatlemania.
In season four of Legends focuses on Sara leading the team to track down magical "fugitives" of mythology from around the timestream, with the support of Ava and the Time Bureau.
In season five, after the Time Bureau is no more, Ava is co-captain of the Waverider and helps the team track down the "encores", evil criminals returned from hell to different points on the timeline.
In season six, Sara is abducted by aliens, later revealed to be employed by Bishop, a scientist from the 22nd century and Ava's creator, who wants Sara to work with him in an attempt to restart the human race with alien-human hybrids. After being fatally poisoned by an alien, Bishop clones Sara and transfers her dying mind into her new body that is spliced with alien DNA granting Sara regenerative abilities. Although horrified by what Bishop has done to her and no longer sure of who she is, Mick convinces her that she is still herself. After escaping the alien world with Mick and Gary, Sara returns to Earth and proposes to Ava who gladly accepts. The two eventually wed in 1925, during an alien invasion caused by Bishop which the Legends eventually manage to stop. However, before the Legends able to leave 1925, an unknown second Waverider destroyed the original Waverider.
During season seven, Sara is stranded in 1925 with the rest of the Legends. While trying to get back to 2021, they learn that the second Waverider was commanded by Bishop along with an evil version of Gideon, who later deploys robot versions of themselves to eliminate the Legends. Sara and the Legends try to get to Gwyn Davies in New York, the person who invented time travel, in order to help them get back home. At the end of season seven, it is revealed that Sara is pregnant with Ava's baby. When she returned to the Waverider, she was arrested by the Time Police alongside her team for breaking the timeline.
