Never pay extra for being allowed to change a return date once. It is virtually useless option. If you try and change a return date you will be maneuvered into paying up to half the cost of a full fare or even more, just to change the date. The reason is always "fare class". Even though the seats are available in other fare class on your date; your fare class is always full. The bottom line is an economy seat is an economy seat! This is just a disgusting practice! I will make it a point to avoid this airline as much as possible for future trips!