Originally Posted by
YEG USER
Could it be UA marketed flights operated by AC? If it is a "USA" carrier operating flights LGA-YUL and then YUL-LAS (either one or both of the segments) I don't think there would be an issue with cabbotage.
I'll repeat my statement - It doesn't matter who is marketing the flights. One ticket can not be priced as LGA-YUL-LAS, because nobody can fly form any point in the US to another point in the US with a connection in Canada. Doesn't matter which country the carrier is based in. Much like no one can book a YYZ-YVR flight with a connection in ORD, even if AC flight numbers all the way.
This is a matter of the government protecting their local industry (and IMO, one of the reasonable things). Where it seems really weird is you can't even book, say, SFO-ANC with a connection in YVR., despite the fact the YVR is pretty much directly enroute anyway.