FYI, it appears alaskaair.com shows phantom award space on AF. I just tried to book two tickets from CDG to SFO. Couldn't book it online so I called and was informed that they have a glitch in their system with AF and inventory will show that does not actually exist. You will know this is the case when you book the flight online and click to purchase an error message will come up saying award space cannot be confirmed with partner airline. The reservation desk can also check to see if the award space actually exists by inputting your traveller information.