Canadian laws are quite different than the US. The Canadian equivalent of the US Constitution does not state a right to be armed. In the US, SCOTUS, through the Heller and McDonald decisions, has affirmed that the 2nd Amendment, in the Bill of Rights, states that there is an individual right to own and carry arms. What is still being litigated is the ability of the states to limit the manner and location of carry.
Many states allow carry, open and/or concealed right up to the security checkpoint at air carrier airports. And of course you can check your unloaded firearm at the airport counter in an appropriate locked container (TSA locks are a no-no per federal law) as you check in to fly out on your hunting trip.
It is indeed important to read the laws for your particular state. Carry that is perfectly legal in NH will get you arrested in NJ.
To address the question in post #1, in general, if it is legal to carry in your local Walmart or Starbucks, it is legal to carry at your airport outside of the secure areas. Most states have pre-emption where the state says that only they have the authority to create laws regarding firearms. This generally means that an airport management is not empowered to declare firearms off limits. They have to follow the applicable laws. In my geography some local PD's have tried to discourage the open carry of handguns and the result has been them paying out lawyers fees and damages, and being direction to retrain their officers. If an airport here were to try the same approach, they would also be quickly "corrected".
But the most important aspect of carrying a firearm is knowing the laws if the state and locality that you are in. What people "think" is often wrong. Read the statutes. Just like carrying passengers in your ship, carrying a firearm comes with some responsibility.
But then, the original poster knows some of this or the question would not have been posted. Idiots carry on without asking. Smart people ask and read up on the facts.
Oh, if you look at a sectional chart that covers Canada, you will see a line from east to west, north of the large population areas. If you look at the chart legend, it explains that line. If you fly north of that line you are required to carry survival equipment, which must include a long gun of at least a specified caliber (I think .30).
Best of luck,
Wes
N78PS