Looked at Porter Pass, a 20 Pack of one way is $5,590. This works out to $559 Return.

Leaving Sunday night, Coming back Thursday night on Porter is $502.

Delta DTW-YUL is $580 and its a non stop flight.

Air Canada is at around $500 when you do YQG-YUL through YYZ.

I budgeted $600 for flights so I will stick to DTW-YUL on Delta. Just need to book it in advance.

The good news is I am using AirBnb and finding some very good deals on fully furnished apartments (not just a couch).