Originally Posted by
Xandrios
Next week we will be flying in from the Caribbean on Delta, arriving at an E gate in ATL, and continuing on with KLM from an F gate.
I find it hard to figure out what this means regarding security checks, immigration (if any), and so on.
These are two international flights so I would assume (hope) that this basically is a gate-change and does not require any further security or immigration procedures. It also seems that there is a 'sterile' walkway between E and F to make this possible.
Is this indeed correct? Would it be possible to go from E to F gates without going landside at all, and therefore possibly also do not require any immigration (ESTA) procedures?
Thanks for your help

No, your assumption is incorrect.
All US transits even to intl departure require US CBP immigration processing.
After that you will claim your bags and go through US customs unless your bag is tagged ITI. You will then drop the bags of at onward baggage (re-check), go through TSA security check and then head to F terminal.
If your bags are tagged ITI at your Caribbean departure point you would not have to pickup and then recheck your bags.