Originally Posted by
andrewr1985
I have a booking with BA (125- ticket) and part of the journey is operated by AS. I cannot change seats through the BA site, but the AS site doesn't accept my booking reference, I get an error of "The confirmation code is invalid"
Is there a way to reserve seats on AS with a BA ticketed journey?
Yes, you need to telephone British Airways and ask them for the Alaska Airlines booking reference.
Once you have that, you can select a seat on Alaska's website.
You will also need it to be able to pre-select food if you're flying First Class on a route where they are offering meal choices.