Originally Posted by
matthandy
Not true, that is not what I expect BA to do at all. Simply recognise the fact that actually, it is the same product and they can re-sell it at the higher price. I don't expect BA to give me anything back, just not charge me for the fact that I want to move by one day.
You expect BA to
value your reservation at the current value it can sell a seat at, in the same way as, in my example, the hotel would
value your reservation at the current price at which it would sell the room. To get an example which is closer to your case, on January 1st you book a hotel room (cancellable rate) at £50 for a night on 20 DEC. on 18 DEC, you change your mind and want to stay on the 21 DEC. By DEC 18, the price for the room you booked has gone up to £250 for both the 20DEC and 21DEC. Would you expect the hotel to change your reservation from the 20th to the 21st without charging you the difference between the price you originally paid and the current price for the room?
G-BOAC gave me a good explanation of the fare rules, so I understand where the charges come from. It doesn't mean that I agree with them, but I understand.
Even if there was zero days advance purchase requirements, you would still have to pay the fare difference between the fare for the bucket at which you orginally booked and the fare for the bucket you want to book.