I have a ticket that I bought (last week) which had perfect connections from Denver to Rio and back. I got a schedule change yesterday because all of our flights to Miami have changed times for when they depart.

Is it possible to change the times for my flights online? I just left the US for 3 months, so this is rather untimely.

Also, my layover was once 1 hours in Miami, and is now 14 for the way there, and went from 3 to 10 on the way back, so it is possible to get a refund on this ticket if I cannot find times that will work with my schedule?

Thanks for any help!