Originally Posted by number_6
To reach BA Silver (equiv. to AA Platinum) you would need about 5 trans-Atlantic round trips in J or equivalent travel
I believe 2 returns in J SFO-France on BA would be enough for BA Silver
1 return = 2*120(SFO-LHR) + 2*40(LHR-France) = 320 Tier points with 600 needed for Silver.
Alternatively 4 returns in coach (Y,B or H) would also get you there.
3 times a year to Asia on Oneworld carriers and twice to Europe on BA would easily get BA Silver assuming the flights are in either J, WT+ or WT (Y,B,H only). As mentioned, in discounted economy only there is no way to get status on BA.
-jani