Originally Posted by
simonsuo
It is interesting to see ONT is considered as a co-terminal with PSP, not other LA airports.
AFAIK, it’s not. OPs picture was of AS schedule change re-accommodation options. The only AS co-terminals are:
SEA/PAE
SFO/SJC/OAK
SNA/LAX/ONT/BUR
🤙🏻
Co-terminal changes are allowed during a SDC if they follow the fare rules and only for the aforementioned list (which is from the fare rules). For example, a LAX-SFO ticket could SDC to a SNA-SFO ticket; however, a SNA-SFO ticket cannot SDC to SNA-SJC because it would require routing through another airport such as SEA; turning it into SNA-SEA-SJC.