Calculating Which is the World's Longest Domestic Flight (opens in new tab)

What is the longest plane flight you can take without leaving a country? The answer could be pretty simple and make for a very short video- but first we have to define what we're talking about. Does a "domestic flight" mean a regularly-scheduled airline route? Does it mean that you don't have to have a passport or move through immigration? Does it mean within a nation proper, or do overseas territories count? And are we talking about a currently-existing route, or one from the past? That's wh...