Originally Posted by
canadiancow
Thank you for the post.
But I still don't see any reason for codeshares to exist. "They allow specific agreements" could apply equally well between any interline partners without codeshares.
I'm sure it all boils down to, at some point, either evidenced or not, the airlines concluded that PAX and/or TAs would trust particular itineraries apparently on a single carrier more than those split across carriers. Or would interpret a codeshare as a high level of trust; to OEM a flight, so to speak.
Going way back, a codeshare might have been easier to book than splitting a trip across multiple call centers (telex centers?).
And because its still a feature of the system... it's still a feature of the system.