[QUOTE=COpltASgldPHX;13093479]
As for the whole interline baggage/ticketing thing it is not tied to IATA. Although most IATA member airlines do have interline agreements with each other all interline agreements are negotiated by each individual airline. /QUOTE]

This is not true.

By being a member of IATA, they have to interline with other IATA carriers as a condition of membership. No individual airline agreements, although nothing precludes an airline from doing so. Just being an IATA member airline is a defacto agreement with all IATA airlines.

When my Icelandair connection in BOS problem came up, I called AS res and asked. That agent had to refer me to a supervisor, who had to research it herself. Icelandair is not that big a carrier, and relatively unknown in the SEA area prior to this year. I remember her comment...." Icelandair....let me see....Oh, they are IATA...no problem...".

To answer the OP's question as to who AS has interline baggage agreements with, only Alaska knows. But by being a member of IATA, Alaska MUST interline with other IATA carriers, whether Alaska has an agreement with a specific IATA carrier or not.

I just called AS res to verify the above.