Originally Posted by
roder
My mom had a similar issue on American with a travel voucher. In order to get around this; she was able to book a cheap one-way fare (like $50 or whatever) using the credit; and the remainder was re-issued under a new voucher with a new expiration date.
Not sure if this will work with a United Ticket Credit but maybe someone else knows?
Nope, at least in my experience. I had a high-value voucher, booked before expiration date, and had to change it ... and was warned I still had to use it before the expiration date. They did not "reissue" the voucher - it was tied to the original ticket number, so the expiration date stuck.