Originally Posted by somedude24
On the other hand, I'm flying Continental (on a JetBlue route, where they matched the fare sale) in 2 months, and Continental WILL NOT credit the fare downgrade without charging a change fee.
See thread:
http://flyertalk.com/forum/showthread.php?t=598437
United also offers a credit in the form of a voucher if the fare goes down. No penalty fee is assessed.