Originally Posted by
AndyTLe
Most airlines (exceptions such as WN and B9) have agreements where they will place you on other airlines IF you meet the criteria, such as missing your flight (if it is the airline's fault). At the end of the month, the charges are reconcile. This is the last resort.
*Slight correct, DL and American Eagle does have a small relationship in LAX and SoCal airports.
I guess you meant B6?

(Well, I wouldn't be surprised if Air Jamaica express has a such rule though..)
Back to the OT, second to SAT lawyer's point.. it clearly seems to be a typical cancelation-protection. I guess it doesn't even matter if DL is affiliated with AA. (done similar thing between UA->NW.)