(DL) Delta Air Lines 3999 Flight Details
On time | Scheduled
Departure
SEA
Seattle-Tacoma International Airport, WA, US
Flight Gate Times
13-May-2026
Scheduled
13:40
PDT
Actual
--
Total Departure Delay: -
Flight Runway Times
13-May-2026
Scheduled
14:01
PDT
Actual
--
Runway Delay: -
Terminal
-
Gate
B3
Craft Type
Embraer 175
E75
Flight Time
Scheduled
3h 1m
Arrival
SNA
John Wayne Airport, CA, US
Flight Gate Times
13-May-2026
Scheduled
16:41
PDT
Estimated
16:23
PDT
Total Arrival Delay: -
Flight Runway Times
13-May-2026
Scheduled
16:26
PDT
Actual
--
Runway Delay: -
Terminal
A
Gate
3
Baggage Claim
-
Tail Number
N255SY
Flight Time
Estimated
2h 43m
Flight Notes
Operated by SkyWest Airlines on behalf of Delta Air Lines
Also marketed as (KE) Korean Air 3091, (KL) KLM 7830, (WS) WestJet 7136
Event Timeline
Date
Event
Data Updated
12 May
22:02
15:02
15:02
Gate Adjustment
Arrival Gate changed from 4 to 3
12 May
20:41
13:41
13:41
Time Adjustment
Scheduled Runway Departure changed to May-13-2026 2:01 PM
Scheduled Runway Arrival changed to May-13-2026 4:26 PM
12 May
16:19
09:19
09:19
Gate Adjustment
Departure Gate changed from A7 to B3
12 May
12:27
05:27
05:27
Gate Adjustment
Departure Gate changed from A14 to A7
12 May
12:18
05:18
05:18
Gate Adjustment
Departure Gate changed from B4 to A14
12 May
10:42
03:42
03:42
Gate Adjustment
Departure Gate changed from A7 to B4
12 May
08:43
01:43
01:43
Time Adjustment
Estimated Gate Arrival changed to May-13-2026 4:23 PM
Tail Number changed from N261SY to N255SY
11 May
10:48
03:48
03:48
Gate Adjustment
Departure Gate changed from B8 to A7
11 May
04:44
21:44
21:44
Gate Adjustment
Departure Gate changed to B8
Arrival Gate changed to 4
Arrival Terminal changed to A
Tail Number changed to N261SY
Actual Equipment changed to E75
10 May
18:19
11:19
11:19
Record Created
10 May
18:19
11:19
11:19
Time Adjustment
Scheduled Gate Departure changed to May-13-2026 1:40 PM
Scheduled Gate Arrival changed to May-13-2026 4:41 PM
Scheduled Equipment changed to E7W