Title: The Last Day (The Vampire Diaries)
Content:  "The Last Day" is the 20th episode of the second season of The CW television series, The Vampire Diaries and the 42nd episode of the series overall. It originally aired on April 28, 2011. The episode was written by Andrew Chambliss and Brian Young and directed by J. Miller Tobin.
Title: The Last Dance (The Vampire Diaries)
Content:  "The Last Dance" is the 18th episode of the second season of The CW television series, The Vampire Diaries and the 40th episode of the series overall. It originally aired on April 14, 2011. The episode was written by Michael Narducci and directed by John Behring.
Title: The Vampire Diaries (season 8)
Content:  The Vampire Diaries, an American supernatural drama, was renewed for an eighth and final season by The CW on March 11, 2016. On July 23, 2016, The CW announced that the upcoming season would be the series' last and would consist of 16 episodes. The season premiered on October 21, 2016 and concluded on March 10, 2017.
Title: Resident Evil (The Vampire Diaries)
Content:  "Resident Evil" is the 18th episode of the fifth season of the American series The Vampire Diaries and the series' 107th episode overall. "Resident Evil" was originally aired on April 17, 2014, on The CW. The episode was written by Caroline Dries and Brian Young and directed by Paul Wesley. The episode is Wesley's debut as director in the series.
Title: Home (The Vampire Diaries)
Content:  "Home" is the 22nd and last episode of the fifth season of the American series The Vampire Diaries and the series' 111th episode overall. "Home" was originally aired on May 15, 2014, on The CW. The episode was written by Caroline Dries and Brian Young and directed by Chris Grismer.
Title: No Exit (The Vampire Diaries)
Content:  "No Exit" is the 14th episode of the fifth season of the American series The Vampire Diaries and the series' 103rd episode overall. "No Exit" was originally aired on February 27, 2014, on The CW. The episode was written by Brian Young and directed by Michael Allowitz.
Title: The Vampire Diaries (season 4)
Content:  The Vampire Diaries, an American supernatural drama, was renewed for a fourth season by the U.S. channel The CW on May 3, 2012, seven days before the third season's finale. Unlike the previous seasons that aired in September, it premiered on October 11, 2012, to avoid competition from major television shows. Season 4 consisted of 23 episodes instead of the usual 22 episodes. On January 11, 2013, it was announced that a back-door pilot focused on the Originals, titled The Originals will air on April 25 for series pick-up. On April 26, 2013, The CW announced that The Originals, The Vampire Diaries spin-off series, was picked up for a full season slated to premiere next fall. On February 11, 2013, The CW renewed the series for a fifth season.
Title: The Vampire Diaries
Content:  she would be leaving the show after its sixth season. Dobrev returned to record a voiceover for the seventh-season finale and returned as a guest star in the series finale. In March 2016, The CW renewed the series for an eighth season, but in July of that year announced that the eighth season, consisting of 16 episodes, would be the show's last. The final season began airing on October 21, 2016, and ended March 10, 2017. The concepts and characters developed in the series served to launch a media franchise that includes other television series, web series, novels and comic books. The television series The Originals, which also aired on The CW, was the first major entry in this collection of connected works.
Title: The Departed (The Vampire Diaries)
Content:  "The Departed" is the twenty-second and final episode of The Vampire Diaries's third season, premiering May 10, 2012 on The CW. During the episode, Elena remembers when life was simpler while the rest of her friends attempt to stay away from Alaric. In the episode's initial airing, it garnered 2.53 million viewers.
Title: The Vampire Diaries (season 2)
Content:  On February 16, 2010, The CW officially renewed The Vampire Diaries for a full 22-episode second season. It premiered on Thursday September 9, 2010, at 8 pm ET. The season finale aired on May 12, 2011.

Question: when was the last episode of vampire diaries aired?
Answer: March 10, 2017.
March 10, 2017.