AS 421 then AS 285 at Seattle
Denver → Seattle → Chicago O'Hare
Timetable, Seattle time
20:41AS 421 from Denver at the gate
23:59AS 285 to Chicago O'Hare leaves the gate
3 h 18 apart on the timetable
Seattle’s board gives a departure time for only about 57% of its flights, so many days show no gate time.
The last days
AS 421 and AS 285 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.
Later flights to Chicago O'Hare
No later flight to Chicago O'Hare on the timetable.