If you're planning a trip through Iqaluit to or from Greenland, we recommend you have a look at Bob Webster's Flying to Europe website.  He has answers for just about every question about making the trip, though he seems like a pretty modest guy and hardly one to brag about it. This document is a few years old now, so some elements may have changed.

We've met many flyers in everything from Saab jets to microlights who've made the trip. We hope this collection of information sources is helpful.  If you have anything to add, let us know.