Originally Posted by
orbitmic
I can't think of any other airline which would allow you a free change just on the ground of having booked the dates by mistake where you have only noticed several days afterwards. Some airlines have a 24 hour period when they will allow a free change/refund precisely because mistakes do occur, but even then, if you haven't noticed by then you will lose everything.
Some airlines, such as Turkish, are more flexible. My mum (she's not too tech savvy) booked the wrong month. The ticket was none-changeable, but after some calls to Turkish airlines customer service they let her re-book the ticket (and without charging any fees) on the condition that the new ticket cost at least as much as the original one.