AS 367 then 1I 921 at Dulles
Seattle (SEA) → Washington → Philadelphia
Timetable, Washington time
05:44AS 367 from Seattle (SEA) at the gate
13:421I 921 to Philadelphia leaves the gate
7 h 58 apart on the timetable
The last days
AS 367 and 1I 921 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.