Check out this deal for a flight from Toronto to Hong Kong for under $800 CAD!  I went online to check the flights & it’s really available! 
The only caveat is that there are 2 stops (i.e. 3 flights) & your one-way flight will take over 22hrs.  As long as you don’t mind that, it’s an amazing deal 🙂 

Kevin & I just came back from a similar flight from YYZ to BKK & although it’s exhausting, it was worth it.