I spotted this open call over in Absolute Write's Paying Markets forum:
"Short Shorts: A Summer 2016 Flash Fiction Contest is open to all new, emerging, and established writers.
We seek flash fiction of 500 words or less.
Winning entries will contribute to our upcoming “Outsiders” theme highlighting the unique struggles, circumstances, and journeys that set individuals apart from others.
Multiple entries, simultaneous submissions, and previously published works permitted. (More details on submissions page.)
Up to three works may be included in each entry.
Accepting entries between May 1, 2016 - September 20, 2016
Grand Prize winning entry and Runners Up to be announced on or before October 20, 2016.
$250 and publication in the 2016 print issue of From the Depths plus Featured Author Interview to accompany published work.
All entries eligible for publication in the 2016 issue of From the Depths.
Contributors to be paid $20 for each published story plus online Featured Author Interview.
All entries accepted via Submittable. https://hauntedwaterspress.submittable.com/submit
$10 reading fee per entry.
Thank you. We look forward to reading your work.
P.S. Don't miss our free reading period for fiction & poetry open through May 31, 2016! Submit today!"