Portal back to Boralus missing in Silithus

If you are unable to see the portal in Silithus back to Boralus or Dazar'alor, or the portal to Silithis from Boralus or Dazar'alor, you may not have progressed far enough in the Battle for Azeroth story.  

Requirements:

• You must be level 50 to unlock your Heart of Azeroth.
• Alliance players need to complete A Nation Divided.
• Horde players need to complete We Need Each Other.

If you complete these quests and still can't see the portal, you may also need to complete the Nazjatar introduction quests and the Empowering the Heart storyline through A Friendly Face.

If you still can't see the portal, you may need to speak to Zidormi to change the phase in Silithus to the current timeline.

In some cases the quest The Nation of Kul Tiras can be skipped and potentially cause issues with the character being teleported back to stormwind keep when trying to reach Boralus. When checking for this issue, make sure that the above quest is also specifically completed alongside the rest of the quest chain.