I'm currently in upstate New York and I'm looking to travel back to my home country in the Caribbean with my two small children. I'm looking to buy one way tickets but I'm not sure if this will be an issue crossing into Canada and then making the international flight. The last time we flew one way, I was asked a lot of questions but luckily their dad was there to answer so it wasn't too big of an issue, plus we were traveling within the United States. I have a signed letter from him but I'm not sure if this will be sufficient for both sets of customs. Does anyone have any experience with this kind of thing?