CX 81 then CX 99 at O'Hare
Columbus → Chicago → Anchorage
Timetable, Chicago time
13:15CX 81 from Columbus at the gate
21:15CX 99 to Anchorage leaves the gate
8 h apart on the timetable
The last days
CX 81 and CX 99 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.