Hello, I am planning a few different trips with family.

Status: AA Platinum (One World Sapphire)

Trip #1: LAX to HND (next day), return HND to LAX. (flying AA metal for entire trip)

Outbound LAX to HND: LAX to HND is at 1am. What lounges in LAX will be available to use on the outbound side if we get to LAX at 7pm the night before the 1am flight? And at arrivals to HND at 5am, as we land very early, is there any access to a lounge at HND upon arrivals to freshen up?

Return HND to LAX: What lounges at HND are available upon departure at HND area?


Trip #2: LAX - LHR (next day), return LHR - LAX (flying AA metal for entire trip)

Outbound LAX - LHR: what lounges at LHR will I have access to, if any, upon arrival?

Return LHR - LAX: what lounges at LHR will I have access to? Which one is recommended?


Trip #3: LAX - LHR (next day) - FRA, return FRA - LHR - LAX (flying BA metal entire journey)

Outbound LAX - LHR - FRA: are the lounges any different than trip 2, by flying on BA metal? Assuming arrivals at LHR T3, transfer to T5 for flight to FRA. Which lounge might be best?

Return FRA - LHR - LAX: are the lounges any different than trip 2, by flying on BA metal? Assume arrival at LHR T5, and transfer to T3 for flight to LAX. Which lounge might be best?


Trip #4: (next year) flying LAX - HND, return HND - LAX (flying Japan Airlines possibly)
Will the outbound / return lounges be any different for flying JAL as a One World Sapphire?


Thank you in advance.