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Season 3

Kara struggles with the loss of Mon-El after he is forced to leave Earth. When Mon-El returns, he reveals that he has time-traveled to the 31st century and founded the Legion, as well as married Imra Ardeen.

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When available, episode names will be translated into your preferred language. Otherwise they will be shown using the series' origin language.
Name First Aired Runtime Image
S03E01 Girl of Steel
October 9, 2017
The CW
42
S03E02 Triggers
October 16, 2017
The CW
42
S03E03 Far From the Tree
October 23, 2017
The CW
42
S03E04 The Faithful
October 30, 2017
The CW
42
S03E05 Damage
November 6, 2017
The CW
42
S03E06 Midvale
November 13, 2017
The CW
42
S03E07 Wake Up
November 20, 2017
The CW
42
S03E08 Crisis on Earth-X (1)
November 27, 2017
The CW
42
S03E09 Reign
mid-season finale
December 4, 2017
The CW
42
S03E10 Legion of Superheroes
January 15, 2018
The CW
42
S03E11 Fort Rozz
January 22, 2018
The CW
42
S03E12 For Good
January 29, 2018
The CW
42
S03E13 Both Sides Now
February 5, 2018
The CW
42
S03E14 Schott Through the Heart
April 16, 2018
The CW
42
S03E15 In Search of Lost Time
April 23, 2018
The CW
42
S03E16 Of Two Minds
April 30, 2018
The CW
42
S03E17 Trinity
May 7, 2018
The CW
42
S03E18 Shelter from the Storm
May 14, 2018
The CW
42
S03E19 The Fanatical
May 21, 2018
The CW
42
S03E20 Dark Side of the Moon
May 28, 2018
The CW
42
S03E21 Not Kansas
June 4, 2018
The CW
42
S03E22 Make It Reign
June 11, 2018
The CW
42
S03E23 Battles Lost and Won
season finale
June 18, 2018
The CW
42