Originally Posted by
emcampbe
If changing through the check in tool works, why not just use that? Not only can you change when you initially check in, after checking in, you can go back to the tool, either on the website or app, and use the change flight option to make the change.
Because you can't use it to bring departure in by more than 24 hours (meaning you can change a Friday afternoon flight to a Thursday afternoon flight as it is within 24 hours) but you can't use the check-in tool until Thursday afternoon. You can push it out via check in.
I like being able to browse for alternate flights and as was noted above, the list shown is frequently incomplete. When it works, it is a very handy feature.