background

(DL) Delta Air Lines 3999 Flight Details

On time | Scheduled

Departure

SEA

Seattle-Tacoma International Airport, WA, US

Flight Gate Times

23-May-2026

Scheduled

13:40

 PDT

Actual

--

Total Departure Delay: -

Flight Runway Times

23-May-2026

Scheduled

--

Actual

--

Runway Delay: -

Terminal

-

Gate

A7

Craft Type

Embraer 175

E75

Flight Time

Scheduled

3h 1m

Arrival

SNA

John Wayne Airport, CA, US

Flight Gate Times

23-May-2026

Scheduled

16:41

 PDT

Estimated

16:29

 PDT

Total Arrival Delay: -

Flight Runway Times

23-May-2026

Scheduled

--

Actual

--

Runway Delay: -

Terminal

A

Gate

4

Baggage Claim

-

Tail Number

N320SY

Flight Time

Estimated

2h 49m

Flight Notes

Operated by SkyWest Airlines on behalf of Delta Air Lines

Also marketed as (KE) Korean Air 3105, (KL) KLM 6284, (WS) WestJet 6762

Event Timeline

Time

Date

UTC

Event

Data Updated

22 May

19:24

Departure Gate changed from B1 to A7

22 May

19:03

Departure Gate changed from S4 to B1

22 May

13:10

Departure Gate changed from B3 to S4

22 May

12:52

Departure Gate changed from B5A to B3

22 May

08:51

Estimated Gate Arrival changed to May-23-2026 4:29 PM

21 May

12:05

Departure Gate changed from B4 to B5A

21 May

04:02

Departure Gate changed to B4

Arrival Gate changed to 4

Arrival Terminal changed to A

Tail Number changed to N320SY

Actual Equipment changed to E75

20 May

18:19

20 May

18:19

Scheduled Gate Departure changed to May-23-2026 1:40 PM

Scheduled Gate Arrival changed to May-23-2026 4:41 PM

Scheduled Equipment changed to E7W