The CW has released the season finale dates for Arrow, Supergirl, The Flash and Riverdale.
Thursday, May 11: Riverdale Season 1 Finale – 9 PM
Monday, May 22: Supergirl Season 2 Finale – 8 PM
Tuesday, May 23: The Flash Season 3 Finale – 8 PM
Wednesday, May 24: Arrow Season 5 Finale – 8 PM
With Supergirl returning April 24th, Flash April 25th and Arrow April 26th… the series will continue straight until their finales five weeks later. No more breaks between now and the end.
Riverdale had this week off but will end with three episodes in a row starting April 27th.
Here is the full list which includes iZombie, the 100 and Supernatural.