If you want to travel far for a con while saving substantial amounts of money, I strongly suggest you find (or form) a convention travel group. I traveled with a group of 20 Canadians to Otakon a few weeks ago. [link]
We rented a mini-bus for that occasion. 8D A/C broke down 1 hr after we left our town, and, being painted in a very dark shade of blue, unable to open windows and driving through record high heat, it felt like an oven inside our bus during both our go-trip and our return-trip.
Otakon '11 was the hottest con I've ever been to. Summer cons in Canada are also hot, but not as hot as Otakon was. I'm glad I had a hotel near the con center, and I always ate my meals at my hotel room, my haven of peace, coolness and privacy, away from the heat, noise and crowdiness of the con.
We have conventions all year long in Canada. Take your pick (AnimeCons.com): [link]
It's about the same as traveling to other cons in the U.S., plus you must have a passport and have Canadian money ($CAD); knowing a bit of our culture and traditions and knowing a bit of French are optional.
Electrical standards are the same, so all your chargers for your electronic devices will also work here. Please though, try to limit your usage of cellphone voicecalls and text messages when you're out of the country, and disable mobile data roaming to prevent sky-high charges to your phone bill... When I was at Anime Boston '11 back in April, I abused mostly text messaging and ended having to pay an extra $75 on that month's bill!
DROO was suppposed to come with me to Anime Boston but he couldn't at the last minute. He was also my backup ride to Otakon but I found that travel group before he got his Otakon photo booth confimation. He'll be at Fan Expo this weekend (2nd & 9th shots above) and I'll see him again at the Montreal Comiccon next month!