Originally Posted by
tommy777
Yes, but according to the CO agent, your original booking class needs to be available to switch flights that are not on the same day as your original flight. If not, you need to upgrade the fare in addition to the 25/50 USD fee
I think the agent was wrong here. I was on an M fare when I did this, and switched to a flight leaving just over 3 hours from when I checked in. In addition, two or three other day-early flights were offered as possibilities to change to for $25, ranging from one that departed an hour from when I was checking in to the one I chose. Very unlikely that all of these had M availability at that point, though of course you never know. (Maybe I took advantage of a website glitch? But the official published policy says nothing about fare class AFAIK).