F9 4504 then CZ 428 at O'Hare
Dallas-Fort Worth → Chicago → Shanghai
Timetable, Chicago time
23:13F9 4504 from Dallas-Fort Worth at the gate
00:30CZ 428 to Shanghai leaves the gate
1 h 17 apart on the timetable, overnight
The last days
F9 4504 and CZ 428 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.