AS 3443 then AA 381 at Seattle
Portland (Oregon) → Seattle → Las Vegas
Timetable, Seattle time
06:00AS 3443 from Portland (Oregon) at the gate
10:30AA 381 to Las Vegas leaves the gate
4 h 30 apart on the timetable
Seattle’s board gives a departure time for only about 59% of its flights, so many days show no gate time.
The last days
AS 3443 and AA 381 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.