Originally Posted by
Often1
Just pick your bag up, carry it through Customs, tear off the AA tag and head for the AS counter. Simply check in for your AS flight as the originating passenger which you will be.
Do make certain that you leave enough time as you are not a connecting passenger.
And luckily Alaska even operates out of the International terminal so the transfer should be easy, but I agree make sure you leave time for check-in according to AS policies.
https://www.alaskaair.com/travelinfo...fornia-airport
https://www.alaskaair.com/content/tr...ing-times.aspx