AS 2159 then 8C 3436 at Seattle
Tulsa → Seattle → Anchorage
Timetable, Seattle time
20:22AS 2159 from Tulsa at the gate
05:308C 3436 to Anchorage leaves the gate
9 h 08 apart on the timetable, overnight
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 2159 and 8C 3436 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.