Full time, not only that, there are US airlines with American crews flying into Canadian cities, albeit a limited number of cities in Canada just like the US. The only difference is that those Canadian and US airlines will only be carrying Canadian-approved passengers. However, the point here is not the nationality of the passengers; it is the deal made between airlines and nations to keep all those airlines flying; they really are losing money, but are happy to stay afloat in this bad environment. It's better than going "belly up," and these airlines are of national importance to each respective nation. If each nation floated their debt or gave them a bailout, you and I as taxpayers would pay for it. Everything is not black and white, but instead shades of grey. You are the first person I now know who has brought up this subject, and I bet you had to do some digging in the news media to find out.