Philippine Airlines had a flight to ORD in the late 1980's. They operated a route between Manila and Chicago from 1986 to 1988, offering flights 2 to 3 times weekly on their 747-200 aircraft. Stops in HNL and SFO with "Mabuhay Chicago" decal on there 747 promoting the new Chicago route.
Almost as bad as the Singapore route back in the early 2000's, with stops in Europe.
Qantas and ELAL should be next, but they are dragging their feet. Qantas already buys a lot of cargo space to ORD. Could put most of it on their own aircraft and save money. El Al also used to fly the ORD. Qantas had charters to ORD in the 1990's. I saw it on the T5 hard stand several times. Stopped in SFO.
Bring back the flights and the long haul international routes return. Amazing!!