Originally Posted by
C17PSGR
TBIT can be accessed behind security from Terminals 4-5-6-7, so 5 of the terminals can get to the Centurion Lounge after security. The Delta Clubs can be accessed in terminals 2-3. So only Terminal 1 is left out. Plus TBIT is carrier agnostic.
T2 and T3 also have airside shuttle bus access to TBIT, so truly only T1 is left out.