Dark Regions is currently hosting a flash fiction story contest, with $1,000 in cash prizes.
There is absolutely no entry fee.
According to their contest page:
We are very excited to announce a new Dark Regions Press writing contest! Send us your best horror flash fiction story ranging from 10 to 1,000 words based on a sole survivor stranded on a deserted island and you could win from $1,000 in prizes and have the story published in digital anthologies used to promote the stories, authors and press! Five stories will be selected as winners and each author who is selected will have Dark Regions Press featuring them in ads, newsletters and on the website!
First place is $500, second place is $200, and third, fourth, and fifth place wins $100 each.
They accept entries from writers around the world.
The deadline to enter is March 31st, 2018.
To learn more, read their contest guidelines.