Air Canada is offering double elite qualifying miles with Flex, Latitude or Executive Class fares through July 31 on a variety of routes between Toronto and Montreal and Ottawa, and between Canada and 13 East Coast airports:
Qualifying booking classes are:
Flex (M,U,H,Q,V,W,S,K,L,T); Latitude (Y,B); Executive Class Lowest (D,Z); and Executive Class Flexible (J,C).
And, no, I don’t expect US carriers to match. 🙂