No you cannot. Flagship longes are not by membership. You need to fly business or first on a AA or OneWorld flight on the same day that is NOT domestic. It has to be international.
Also, soon AmEx is restricting Centurion access to 3 hours pre flight
One guest. Also economy won't get you into flagship. Only coast to coast first
Like Kirsten said earlier, EP's have access to the Flagship lounge only when traveling international. If only domestic then no go. Also 1 guest allowed.
Travelling locally...Many thanks anyway
Are you traveling internationally? American Express Platinum doesn't grant access to any American Airlines Admiral's Clubs or Flagship Lounge. As an EP traveling to a qualifying international destination you would have access for yourself & ONE guest.
Can you edit the question for clarity please?
Thanks! Your answer is awaiting moderation.