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Thread: SEA C Concourse 2-Story Alaska Lounge(s) to Be "Largest in the US"
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Old Mar 16, 2026 | 8:18 pm
  #24  
missamo80
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Originally Posted by Seat 2A
Correct me if I'm wrong, please, but my understanding is international flights can depart from most anywhere at SEA, but they must arrive at the S satellite because that's where US Customs is located.
There are A gates that are dual-purpose and can be used for international arrivals as well. The south satellite used to be where customs was, but the new-ish International Arrivals Facility is its own separate thing.
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