Title: Legends of Tomorrow (season 3)
Content:  The third season began airing on October 10, 2017 on The CW in the United States, and concluded on April 9, 2018.
Title: Legends of Tomorrow (season 3)
Content:  In January 2017, Legends of Tomorrow was renewed by The CW for a third season. Showrunner Phil Klemmer said the season would be "more in the world of the occult and monsters", unlike the first two seasons which were more science-focused.
Title: Legends of Tomorrow (season 3)
Content:  The third season of the American television series Legends of Tomorrow, which is based on characters from DC Comics, premiered on The CW on October 10, 2017, and ran for 18 episodes until April 9, 2018. The season follows the Legends, a dysfunctional team of time-traveling superheroes and anti-heroes, and their mission to correct anachronisms in time that they unintentionally caused. It is set in the Arrowverse, sharing continuity with the other television series of the universe, and is a spin-off of Arrow and The Flash. The season is produced by Berlanti Productions, Warner Bros. Television, and DC Entertainment, with Phil Klemmer serving as showrunners. The season was ordered in January 2017. Production began that July and ended in February 2018. Principal cast members Victor Garber, Brandon Routh, Caity Lotz, Franz Drameh, Maisie Richardson-Sellers, Amy Pemberton, Nick Zano, and Dominic Purcell return from previous seasons. They are joined by new cast members Tala Ashe and The Flash alum Keiynan Lonsdale. The series was renewed for a fourth season on April 2, 2017.
Title: Legends of Tomorrow (season 3)
Content:  The season was made available for streaming on Netflix in late April 2018, soon after the season finale aired. It was released on Blu-Ray on September 25, 2018.
Title: Tomorrow (Angel)
Content:  "Tomorrow" is the 22nd and final episode of season 3 in the television show Angel. The episode was written and directed by executive producer David Greenwalt. The narrative of the season three finale deals with Angel's complex relationship with his son (made worse by the evil law firm Wolfram & Hart). The episode and season is left on a cliffhanger of Angel being thrown to the bottom of the ocean. This is the last episode written by Greenwalt, as he left the show after this season and was no longer an executive producer or the showrunner. He would return to direct an episode in the show's fifth and final season.
Title: Legends of Tomorrow (season 3)
Content:  • Nils Hognestad as King Arthur • Simon Merrells as Julius Caesar • Billy Zane as P. T. Barnum • Jack Fisher as young Ray Palmer • Susie Abromeit as Sandy Palmer • Echo Kellum as Curtis Holt / Mister Terrific • Celia Massingham as Hedy Lamarr • Bar Paly as Helen of Troy • Samuel Vincent as Arnold Coleson • Evan Jones as Dick Rory • David Sobolov voices Grodd • Dianne Doan as Anh Ly • Stephen Amell as Oliver Queen / Green Arrow and Dark Arrow • David Ramsey as John Diggle • Emily Bett Rickards as Felicity 
Title: Legends of Tomorrow (season 3)
Content:  a younger version of the character • Graeme McComb as young Martin Stein • Thor Knai as Leif Erikson • Katia Winter as Freydís Eiríksdóttir • Madeleine Arthur as young Nora Darhk • Marilyn Norry as Ellen Moore • * Annabel Marshall-Roth portrays a younger version of the character • Jonathan Cake as Blackbeard • Adrian Hough as Bernhardt Vogel • Luke Bilyk as Elvis Presley • Geoffrey Blake as Lucious Presley • Violett Beane as Jesse Wells • Matthew MacCaull as Henry Heywood • Erica Tazel as Esi • Lovell Adams-Gray as Barack Obama • Johnathon Schaech as Jonah Hex
Title: Legends of Tomorrow (season 3)
Content:  mother Joy Richardson recurred as Jiwe's vision quest ancestor. Wentworth Miller, who played Leonard Snart / Captain Cold as a regular in season 1 and recurred in season 2, returned to play the character's Earth-X doppelganger Leo Snart. This was the final season of the series to feature him. John Noble voices Mallus, the season's main antagonist, but the character's true form is not revealed until the season's penultimate episode "Guest Starring John Noble", where Noble also portrays himself in a guest appearance. Jes Macallan, Adam Tsekhman and Hiro Kanagawa recurred as the Time Bureau agents Ava Sharpe, Gary Green and Wilbur Bennett, respectively.
Title: Legends of Tomorrow
Content:  tone in its third season while spotlighting adventurous plots and a distinct sense of humor." while IGN gave the season an approval rating of 8.1/10, stating: "When Legends of Tomorrow works, it's easily among the best superhero shows on television (if not shows in general). Unfortunately, while Season 3 reached some impressive highs, it also gave us some of the weakest installments of the series. Season 3 ultimately suffered from its inability to create a conflict worthy of this cast of misfit heroes, and that casts a shadow that will linger when the series returns for Season 4." In April 2021, The A.V. Club praised the show's transformation to an "amazing metafictional comedy", calling it "one of the most impressive turnarounds in genre TV history."
Title: List of Legends of Tomorrow episodes
Content:  Legends of Tomorrow is an American action-adventure television series developed by Greg Berlanti, Marc Guggenheim, Andrew Kreisberg and Phil Klemmer, who are also executive producers along with Sarah Schechter and Chris Fedak; Klemmer serves as showrunner. The series airs on The CW and is a spin-off from Arrow and The Flash, existing in the same fictional universe. The series was renewed for a seventh season, which premiered on October 13, 2021.

Question: legends of tomorrow season 3 finale air date?
Answer: April 9, 2018.
April 9, 2018.