Flash and Supergirl Crossovers
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Burning For You by AWolfAmongSwans reviews
When Barry Allen makes a surprise visit back to National City, his efforts to be helpful land Alex in a rather embarrassing situation inside Maxwell Lord's office. [cross-posted from AO3]
Rated: T - English - Humor - Chapters: 1 - Words: 1,593 - Reviews: 1 - Favs: 20 - Follows: 12 - Published: 5/23/2016 - Barry A./The Flash, Kara D./Supergirl, Alex D., Maxwell L. - Complete
Sunshine Sanctorum by FollowTheReaper01
Sunshine Sanctorum is a mental institution for Star Man. In this world and the next, it houses many a hero and villain. That list includes but is not limited to: Oliver Queen, Barry Allen, Cisco Ramon and Winslow Scott Jr. (Flash/Arrow/Supergirl Crossover)
Rated: T - English - Angst/Supernatural - Chapters: 1 - Words: 567 - Favs: 4 - Follows: 7 - Published: 5/18/2016 - Barry A./The Flash, Cisco R., Oliver Q./The Arrow, Winn S.
You Invited Who? by cornholio4 reviews
As Barry and Kara prepare for their wedding, Kara sees some of the guest that Barry has invited! Barry/Kara, oneshot drabble.
Rated: T - English - Romance/Humor - Chapters: 1 - Words: 1,030 - Reviews: 6 - Favs: 73 - Follows: 35 - Published: 5/15/2016 - [Barry A./The Flash, Kara D./Supergirl] Oliver Q./The Arrow - Complete
Superkaraoke by turambar499 reviews
Arrow has employed John Barrowman for four seasons, but there hasn't been a musical episode, so I don't have much hope for The Flash or Supergirl. The next best thing? Karaoke with the happier superheroes on TV. K-plus for a tiny bit of language.
Rated: K+ - English - Friendship/Romance - Chapters: 1 - Words: 5,558 - Reviews: 6 - Favs: 55 - Follows: 20 - Published: 5/8/2016 - Barry A./The Flash, Kara D./Supergirl - Complete
It's Not Over by ThePuddleJumper reviews
Barry/Kara. This is an alternate take on the Flash episode "Rupture"—reimagining it as another Supergirl crossover. This story includes spoilers for The Flash and Supergirl with a few liberties taken to certain plotlines in these shows.
Rated: T - English - Chapters: 1 - Words: 5,675 - Reviews: 22 - Favs: 135 - Follows: 137 - Published: 5/2/2016 - Barry A./The Flash, Kara D./Supergirl
We Could be Heroes by Alter Alyce reviews
After an article from Iris West reached Cat Grant all the way in National City. She sends her assistant and her friends to Central City. to see what is the big deal about this Flash. It gave Kara a chance to meet up with an old friend. And see some surprises underneath the masks.
Rated: K+ - English - Chapters: 3 - Words: 5,942 - Reviews: 16 - Favs: 119 - Follows: 129 - Updated: 4/27/2016 - Published: 1/12/2016 - Complete
SuperEarth: Zoom by Captain Sigma - Karry Beta reviews
After leaving Kara behind, Barry thinks he made it home. He's wrong. In a world similar and yet completely different, Barry must team up with another version of a good friend and fight a foe who just won't die. Will he make it home this time? And can he stop Zoom now both are stuck on SuperEarth? - Three chapter follow-up to Supergirl's "Worlds Finest".
Rated: K+ - English - Sci-Fi/Friendship - Chapters: 4 - Words: 8,982 - Reviews: 28 - Favs: 76 - Follows: 64 - Updated: 4/20/2016 - Published: 4/4/2016 - Barry A./The Flash, Harrison Wells, Kara D./Supergirl, Jeremiah D. - Complete
Banshee cry by Isaboo26 reviews
This time Barry needs Kara's help to defeat Silver Banshee and stop her from stealing a weapon that could destroy both worlds.
Rated: K+ - English - Sci-Fi/Friendship - Chapters: 2 - Words: 4,367 - Reviews: 4 - Favs: 20 - Follows: 29 - Updated: 4/17/2016 - Published: 4/3/2016
Two Heroes but Only One Goal by NY-Yellow-Cab reviews
When two superheroes team up to take down an alien...
Rated: T - English - Sci-Fi/Friendship - Chapters: 1 - Words: 3,140 - Reviews: 1 - Favs: 16 - Follows: 13 - Published: 4/13/2016 - Barry A./The Flash, Cisco R., Kara D./Supergirl, Alex D. - Complete
A Girlfriend From Another Universe by MarvelDC31 reviews
Barry and Kara create a whole new meaning to long-distance relationships. Travelling to and from alternate universes to visit gets Barry in trouble with his team. But, once it's sorted out, Team Flash meets Supergirl and Cisco collapses from fanboying internally.
Rated: T - English - Humor/Romance - Chapters: 2 - Words: 5,799 - Reviews: 23 - Favs: 304 - Follows: 121 - Updated: 4/4/2016 - Published: 3/26/2016 - Barry A./The Flash, Kara D./Supergirl - Complete
5 Plus 1 Relationship Freak Outs by MarvelDC31 reviews
5 times people freaked out about Kara and Barry's relationship, and the one time they didn't.
Rated: T - English - Family/Friendship - Chapters: 1 - Words: 6,983 - Reviews: 22 - Favs: 238 - Follows: 95 - Published: 4/4/2016 - Barry A./The Flash, Kara D./Supergirl - Complete
Kindred by trufflemores reviews
1.18. Barry and Kara share donuts on a rooftop.
Rated: K+ - English - Friendship/Family - Chapters: 1 - Words: 3,018 - Reviews: 32 - Favs: 206 - Follows: 60 - Published: 4/4/2016 - [Barry A./The Flash, Kara D./Supergirl] - Complete
Hero's Experience by silverwolvesarecool reviews
Sometimes wisdom comes with age and other times it comes with experience.
Rated: K+ - English - Friendship/Adventure - Chapters: 1 - Words: 8,130 - Reviews: 11 - Favs: 79 - Follows: 36 - Published: 4/4/2016 - Barry A./The Flash, Kara D./Supergirl, James O./Guardian, Winn S. - Complete
Flash and Supergirl: Interdimensional Couple by cornholio4 reviews
The Fastest Man Alive of one Earth and the Girl of Steel from another are the multiverse's first ever interdimensional couple, see how that plays out especially with their friends meet. Barry/Kara.
Rated: T - English - Romance/Humor - Chapters: 3 - Words: 3,666 - Reviews: 19 - Favs: 99 - Follows: 87 - Updated: 4/1/2016 - Published: 3/29/2016 - [Barry A./The Flash, Kara D./Supergirl] - Complete
Welcome to National City by DfangOO reviews
After trying to cross over to Earth 2 Barry finds himself stuck in a world he hadn't planned on. Now Supergirl finds herself with an unexpected ally...and maybe something more.
Rated: T - English - Romance - Chapters: 5 - Words: 10,668 - Reviews: 51 - Favs: 155 - Follows: 220 - Updated: 3/23/2016 - Published: 3/18/2016
Un veloz aliado by dalekCAT reviews
Qué pasaría si Flash lograra emendar las consecuencias de su viaje pero a un alto precio, que para salvar a todos tuviera que abandonarlos. Llegando a un nuevo sitio que proteger donde no es el único benefactor con habilidades. Un mal sumario puede implicar una buena historia…pero eso decide lo tu
Rated: M - Spanish - Friendship/Adventure - Chapters: 5 - Words: 6,932 - Reviews: 10 - Favs: 14 - Follows: 13 - Updated: 3/22/2016 - Published: 7/22/2015
Lightning Strikes National by Michael Weyer reviews
Barry's trip to this Earth takes place earlier as he faces a Red K-enraged Kara. All comments welcomed.
Rated: T - English - Chapters: 1 - Words: 3,112 - Reviews: 25 - Favs: 104 - Follows: 103 - Published: 3/19/2016
Superflash by Calvin Night reviews
The DEO encounters The Flash, who warns them of incoming disaster. Will their combined forces take it, and what is he hiding from them?
Rated: T - English - Supernatural/Sci-Fi - Chapters: 2 - Words: 2,702 - Reviews: 6 - Favs: 49 - Follows: 73 - Updated: 3/13/2016 - Published: 2/11/2016
Different Earth, Different Hero by silverwolvesarecool reviews
Barry has an encounter with a hero from an alternate world.
Rated: K+ - English - Adventure/Mystery - Chapters: 1 - Words: 3,498 - Reviews: 18 - Favs: 56 - Follows: 52 - Published: 3/9/2016 - Barry A./The Flash, Kara D./Supergirl, James O./Guardian, Winn S. - Complete
Not So Parallel Universe by graybabe reviews
The Singularity caused problems for more than just Barry. From another universe, Zoom brings new players to defeat Flash. Unknown to Flash or Zoom, more than just humans arrived. Kara Danvers meet Barry Allen. Super girl meet Flash.
Rated: K+ - English - Romance/Adventure - Chapters: 1 - Words: 1,376 - Reviews: 16 - Favs: 67 - Follows: 100 - Published: 2/3/2016 - [Barry A./The Flash, Kara D./Supergirl]
Reunited by Lycanboy666 reviews
After the death of Felicity Smoak a guilt ridden Barry runs off to see Kara who is an old friend but also the sister of his ex-girlfriend: Alex Danvers, Will Kara help him rid the guilt and will his feelings for Alex return when he see's her again.
Rated: T - English - Romance - Chapters: 1 - Words: 1,060 - Reviews: 5 - Favs: 22 - Follows: 13 - Published: 1/19/2016 - Barry A./The Flash, Kara D./Supergirl - Complete
Live While We're Young by Alter Alyce reviews
Alex Danvers spent most of her childhood taking care of Kara, Barry spent most of his pining over his best friend and thinking of his dad in prison. When college life hits them. Will they force everything out or finally start to live their lives. In "We could be Heroes" verse. And continuing the song lyric titles :)
Rated: K+ - English - Romance/Humor - Chapters: 1 - Words: 2,994 - Reviews: 4 - Favs: 47 - Follows: 31 - Published: 1/16/2016 - [Barry A./The Flash, Alex D.] - Complete
A Speedster In National City by LycoX reviews
Barry takes a trip to National City after Oliver suggests it to determine if whether or not Supergirl is a threat.
Rated: T - English - Friendship/Humor - Chapters: 1 - Words: 1,358 - Reviews: 10 - Favs: 46 - Follows: 27 - Published: 1/5/2016 - [Barry A./The Flash, Patty S.] Kara D./Supergirl - Complete
Things we do for love by Lycanboy666 reviews
(Karry pairing) Kara/Supergirl had been angry as hell recently, everyone thought Cat was getting to her but they were wrong, after losing her Love Barry Allen she has become distant until a friend of Barry's tells her the location of the pit. will Kara put Barry in the pit and if she does what will come out?
Rated: T - English - Romance - Chapters: 1 - Words: 1,353 - Reviews: 9 - Favs: 43 - Follows: 21 - Published: 12/31/2015 - Barry A./The Flash, Kara D./Supergirl - Complete
Bridge between worlds by Lycanboy666 reviews
(Part 2 of the New World series) (Kara/Barry) As the guest of the Ball Barry makes a discovery which makes him happier than he had been for 5 years, and then he see's Kara in her dress his heart skips a beat unknown to them all that Zod is about to make his move with the abomination he has resurrected from Jor-El's old project.
Rated: T - English - Romance - Chapters: 1 - Words: 1,273 - Reviews: 6 - Favs: 17 - Follows: 8 - Published: 12/25/2015 - Barry A./The Flash, Kara D./Supergirl - Complete
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