I did not use all the segments of my nonrefundable ticket. Am I entitled to any sort of compensation?

A: Most nonrefundable tickets are issued on a completed round-trip basis. The residual value is determined as the difference between the fare paid and the fare for the transportation actually used as determined by the applicable rules less any fees or penalties defined in the rules of the fare that was purchased. Had you purchased a ticket with only the segments you actually traveled, the fare would probably have been much higher, so typically there is no residual value from the unused portion of your ticket.