AirTran has announced an increase in change fees effective September 30th. Per their website, "all AirTran Airways fares are subject to a $60 change fee per person for any change made after purchase through September 30, 2007, plus any applicable increase in airfare. A $75 fee per person will apply to changes made after September 30, 2007, plus any applicable increase in airfare."

JetBlue announced earlier this month an increase in their change fee as well. Before the policy change customers we're out $25 bucks, now it's $35 for online changes, and $45 if an airline rep assists with the change (plus any increase in airfare).

In comparison, Southwest has no change fees (you pay only in change in the fare).