AS 377 then AS 557 at Seattle
Atlanta → Seattle → Missoula
Timetable, Seattle time
09:30AS 377 from Atlanta at the gate
18:53AS 557 to Missoula leaves the gate
9 h 23 apart on the timetable
Seattle’s board gives a departure time for only about 56% of its flights, so many days show no gate time.
The last days
AS 377 and AS 557 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 Missoula
No later flight to Missoula on the timetable.