Originally Posted by
NWIFlyer
And additionally oneworld Sapphire (BA Silver) have access to Flagship Lounges.
Keeping me honest!

I should have remembered that, as that is how I used to get in!
Originally Posted by
rather_be_on_a_griffin
I had access not long after they joined OW on a BA reward ticket. I found them to be charming but obviously it was unfamiliar and I helped them look up the rules. By now should be easier.
They're good people at Alaska Airlines, I've found. I really enjoy flying with them (and will again next month to Hawaii!)