We are sailing on the Tahitian Princess 12/10.
We arrive into LAX via Terminal 4 then have to go to the Tom Bradley Terminal for our next flight (we have a 4 hour layover).
Does anyone know, can we move from Terminal 4 to the Tom Bradley terminal without going out and thru Security again. I read somewhere that you must go thru security, but the map for Terminal 4 and Tom Bradley look connected.
Was considering getting a 1 day pass for the Admirals club to help pass the time.
Most of the terminals at Los Angeles International Airport are interconnected "airside to airside" by underground tunnels.
And unfortunately, nearly all of those tunnels are now semi-permanently blocked off.
This might seem inconvenient, but there's actually a very good reason for it. A few years ago, the airport had a incident in which somebody breached a security checkpoint in one terminal. The Transportation Security Agency (TSA) had to evacuate the air sides of ALL of the interconnected terminals, search the air sides of ALL of the interconnected terminals to verify that they were completely evacuated, then search the air sides of ALL of the interconnected terminals again for unauthorized objects, then rescreen ALL of the passengers who were in ALL of the affected terminals. This process effectively stopped all flights coming and going on the affected side of the airport for several hours. In the aftermath, the airport authority and the TSA decided to block off all of the tunnels that did not connect two terminals serving the same airline to limit the impact of subsequent breaches. This action limits the impact to the terminal in which the breach occurs, so airlines located in other terminals can continue their normal operations. It also allows the above sequence of corrective actions to proceed more quickly, partly because the same team of responders has a much smaller area to search and partly because it's no longer necessary to await completion of each step in the adjacent terminals before starting the next step of the process.
That said, I think that you are looking at a poor map. IIRC, there's a physical gap between Terminal 4 and the Tom Bradley International Terminal, and my recollection is that the Tom Bradley International Terminal does not have "air side" interconnections to either of the adjacent terminals.
And, in any case, an airside interconnection would now be moot anyway. The foreign carriers that occupy the Tom Bradley International Terminal do not have check-in desks inside the secure area so you would have to come out of the secure area to check in for your foreign flight anyway. Likewise, on the return leg, you have to claim your luggage to clear U. S. customs at the airport where you first land in the United States. The TSA requires passengers who have access to checked luggage in the customs area to clear security after rechecking the checked luggage to ensure that they have not removed items from their checked luggage that are not permitted in the cabin.