Even better, this March I brought my M4/M203 out west with me, and no problems. Westjet was a little more picky than AirCanada, they were not experienced in dealing w/ firearms at all ie, not knowing what forms to fill out etc, luckily I always bring my forms from my last trip with me!
Surprisingly, my bag of .25's in a 2l canteen caused the biggest holdup, as the xray tech was concerned they looked like ballbearings (ie, bomb) and I had to dig them up from the bottom of my barrack box.
But yes, the mail is a great way if you already have enough luggage to deal with.
Duffamn, please don't knock it if you obviously havn't tried it? This was my third inter-province flight with airsoft and no problems.