Originally Posted by
IAN-UK
That's not entirely correct. The fare difference is collected ONLY if the passenger cannot be accommodated in the same fare class originally booked. And here fare class means the alphabet designator of the fare, known as RBD.
Originally Posted by
Doraemat
Yeah so if the same booking class is available then no additional amount would be payable.
For example, if you book R class for the original ticket and you wanted to change your destination and the new flight also has R class available, then no fee payable. If R class is not available then you would need to pay the fare difference.
This was what I was trying to mention.
You could change an IAD-BEY ticket in R fare bucket to IAD-GOI, IAD-MLE, IAD-JRO, etc... for free if there is R fare bucket available on the new itinerary. In this case, you would not need to pay the fare difference.
However, you could not change for free to a date where there is only full fare J is available when you book an R fare bucket ticket. In this case, you would need to pay the fare difference.