Originally Posted by
zorn
It would say so in the fare rules for your ticket. It is not allowed on some of the cheaper N fares, but it is allowed on all of the others.
If you bought was seemed to be a very very cheap N fare, there's a good chance you won't be able to make the same day change for a flat $100.
I am on an N fare; looks like I'll have to rely on the mercy of the agents to avoid YUL. In all probability it won't be a problem; how badly is YUL affected during snowstorms, etc.?