Originally Posted by
mre5765
The international (including Canada and Mexico) outbound flights can be moved to the international terminal, and the domestic flights out of the international terminal.
Whiskey Tango Foxtrot are you smoking?
ORD would be particularly painful to reconfigure - everyone would either have to exit security and take the people-mover to T5 for international connections (which would probably then be massively over capacity in terms of # of gates and need to expand somehow), or the alternate would need to be that some portion of the B concourse in T1 (probably the high # side) would need to be converted to international departures for *A members (UA, CO, AC), and one of the smaller T3 concourses (G or L) would need to be done for the other international flights that currently depart from T2/T3. Both would require interior/exterior changes to accommodate 747/767/777 operations in gates that don't have enough space outside for the plane, or inside for the passengers.
Either option would probably cost hundreds of millions to implement.