Originally Posted by
beachfan
Also, since you aren’t at an international gateway for AA or Iberiafor TATL, your connecting flight would almost certainly be in coach.
I, too, think the OP's spec is wildly unrealistic but I don't agree with your statement above. AS has F service SEA-YVR/LAX/ORD/DFW/PHL/JFK. AA has F service SEA-LAX/DFW/CLT/JFK.