Originally Posted by emcampbe

not sure where the possibility to need to pay a double fee would come from. The fee is technically for re-issue of the ticket, which I believe is one reason why it isn’t charged on cancelation of existing itinerary, but only when you book the new one. Even if making changes to both an outbound and return on a roundtrip, you’d only pay 1 fee if making them at the same time since they can make both changes and then reissue just once.

even using cash tickets both ways, assuming the one-way fare is half the round trip, booking into Canada on 2 one ways actually saves usually - I’ve found as much as $50/person on my typical trips. It’s taxes, mostly, I think - HST is collected only on the ex-Canada direction for a one-way, but collected on the full amount of booking a round trip.