Originally Posted by
gabycheesecake
It would be with Air Canada, Ottawa-Toronto-London with a 1.5 hour layover, or Ottawa-Montreal-London with a 5 hour 15 minute layover. I'd rather not take a bus or train down to Montreal, when I fly home it would be nice not to have to still travel for two hours after the flight arrives!
I usually think YYZ is a better option, simply because there are more options to get out if something happens with your connection. But..I personally would be anxious about a 1.5 hour layover in this situation...can't you take an earlier flight to toronto? Regarding Nexus, those lines are open but you will have already cleared security in Ottawa so not relevant.
If it were me, though...I would actually drive to Montreal and fly from there. I live in the fake London (YXU) and gave up on the YXU-YYZ flight and simply fly direct from YYZ everywhere. I am used to the drive and appreciate not sweating the connection issue.