Originally Posted by
exwannabe
Changing the ticket is not that bad. You will be out $150(per).
But my understanding is that DL will be able to keep your TATL flights at the booked levels. So the only issue is the Berlin -> LHR flight.
Worst possible case is you drop that leg and pay $150. But most likely you will pay $150 instead of having to buy another ticket.
International reissue/change fee is more than $150.