Live tracking not available yet
DL3991 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
SEA
Seattle–Tacoma International Airport
Seattle
TS Gate B4 Scheduled 4:25 PM
Actual 4:25 PM
SFO
San Francisco International Airport
San Francisco
T1 Gate C3 Scheduled 6:44 PM
Actual 6:33 PM
2h 19m flight time
Daily
Operated by SkyWest Airlines
Recent Flights
No flight history yet
History builds as this flight gets tracked
Schedule
Operates
Daily
Departure
4:25 PM
Arrival
6:44 PM
Duration
2h 19m
Aircraft
Embraer E175
Terminal
TS
T1
Gate
B4
C3
Actual
16:25
18:33
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
Mar 13 —
Jun 12, 2026