What are the restrictions on United when cancelling a nonrefundable flight?
If I cancel a United flight, from what I understand I can use the value of the ticket toward a future flight, but I'll have to pay a fee of $300. But what I can't seem to find out is
- Does the future flight have to be the same departure/arrival airports?
- Does the value of the ticket expire (e.g., after a year?)
- Can I apply the value of the ticket toward any future flight (perhaps with the restriction in the first bullet), or do they restrict to a small subset of future flights?
Maybe there's a page somewhere that explains all this, but I can't find it after searching both the United website and Google.