<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by zrs70:
No change fee as new ticket is higher fare and you can buy up without penalty (from just about every fare. Now it is possible that your fare does not allow this. I would look at the fare rules).</font>
For others who may read this and aren't familiar with international fare rules, a bit of clarification. The "buy up" clause only works on international tickets, not domestic.