I think we come at this from somewhat different perspectives. I'm really only able to speak to the situation on the ground in Iraq. I think any travel is dangerous right now throughout northern Iraq. I don't think there's a particular point at which it becomes more dangerous or less dangerous. It really depends on what's happening on the ground in terms of the military operations and what groups like Daesh might find an attractive target.
Evidence of meeting #40 for Citizenship and Immigration in the 42nd Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was ircc.
A recording is available from Parliament.