I am flying Montreal- Dubai on multiple carriers and I need help to max out my miles. I already have around 20k miles on US Airways and 15K on Jet Blue.
How can I do this? I used 45K miles on United last year to get to Hawaii and would like to do the same. I could fly to Hawaii on Us Airways, United or Air Canada.

Here are the carriers

Air Canada
Emirates
British Airways
Air Canada

thanks