Since your profile says you are still in Canada..There isn't much point in getting into detail...

However the easiest way is to have the membership reward program of both Qatar airways (www.qmiles.com) and Emirates (www.skywards.com) signed up..

Make sure that you make most of your business and personal trips on either of these two airlines (Qmiles is better rewarding..though I am not sure about Qatar Airways)...and so the best way to fly to Dubai would be FREE...