There is no US customs in SXM, when changing planes in the US you have to claim your baggage & go thru US customs then re-check baggage.....if you where flying non-stop then your bags would be checked thru to Canada.....different going down at YYZ, we have US customs & bags can be checked thru.....kate <img src="http://www.traveltalkonline.com/forums/images/graemlins/canada.gif" alt="" />