I bought a round trip ticket from new york to london on VS and I used the first part of the ticket. But I do not need to use second part of this ticket, i.e., london to NYC. I made a phone call to VS. They told me this ticket still have value within a year and I can use it to fly other VS flight but I need to pay the difference.
The ticket I bought is cheap and it is about 499 for round trip but the fee is very expensive. The total cost is about USD1100. I am wondering if I change to other flight like london to hong kong, I only need to pay the fare difference and no need to pay the high surcharge. Is that right? Anybody have similar experience. Thanks!