True, credits cannot be transferred to another person, but I am not sure that those credits are specific to indiviual travellers--but maybe just specific to whoever paid the bill...In my situation, I had booked travel on southwest for myself, my son, and his girlfriend but had to cancel our trip when my son and his girlfrined couldn't get off work. Not that it matters, but I booked each way seperately). Just under a year later, I booked a new trip for myself, DH, and my other 2 kids (not including the one from the previous trip and not including the girlfriend). I was able to apply the entire credit to my new trip even though the itinerary didn't include 2 of the original travelers. I hope that makes sense.