Live tracking not available yet
DL3999 has a schedule in our database but isn't on the airport board right now. Live position data typically appears within a few hours of departure.
Flight Status
Scheduled
Route Info
SNA
John Wayne Orange County International Airport
Santa Ana
Scheduled 3:52 PM
SEA
Seattle–Tacoma International Airport
Seattle
Scheduled 7:05 PM
3h 13m flight time
Daily
Recent Flights
Last 3 observedMar 15
Sun
PIT
DTW
Dep 14:07:00
(actual 14:17:00)
CR7
In Air
Mar 10
Tue
PIT
DTW
Dep 14:07:00
(actual 14:19:00)
CR7
In Air
Mar 09
Mon
DTW
PIT
Dep 12:24:00
(actual 13:28:00)
CR7
Boarding
Schedule
Operating Days
Mo
Tu
We
Th
Fr
Sa
Su
Upcoming
Thu, Mar 19
Fri, Mar 20
Sat, Mar 21
Sun, Mar 22
Mon, Mar 23
Tue, Mar 24
Wed, Mar 25
Schedule valid
Apr 13 —
Jun 17, 2026