North flow: night time from 10:00 p.m. – 6:00 a.m.
North Flows Arrivals (red), North Flows Departures - Puget Sound Procedure (green), and North Flow Departures Corridor (black)
Arriving jet aircraft execute final turns before entering the narrow five nautical mile (nm) corridor extending from the runways.
Departing jet aircraft are confined to a narrow corridor and should not turn to the east. Instead, all aircraft turn to the west and continue north over the Duwamish industrial area and Elliot Bay before initiating turns towards their final destinations.
Once through the North Flow Departures corridor, jet aircraft are then vectored toward their final destinations while over Puget Sound. Aircraft turning east must reach an altitude of at least 10,000 feet before re-crossing the shoreline.
