During the other 30% of the year (typically between the fall and spring), the airfield operates in "North Flow", with arrivals and departures on runways 35L and 35R. As in South Flow, departing aircraft generally turn east to southeast immediately after taking off, so arrivals from the north pass west of the airport before turning north to land. Residences near SMF are typically south and east of the airport, so North Flow is preferred at night (between 2145 and 0745 local time), conditions permitting, to route flights over agricultural land.