OO3999 Flight Status SkyWest Airlines: Seattle to Orange County (SKW3999)
OO 3999 Seattle to Orange County Flight Status
Not scheduled today. Latest flight: September 7th, 2026 ; recent history is in the table below.
OO 3999 Flight Status & Schedule SkyWest Airlines Seattle to Orange County
| Date | From | To | Departure | Arrival | Status | Details |
|---|---|---|---|---|---|---|
| Sep 07 | SEA | SNA | 14:47 | 17:05 | Landed | Track > |
| Sep 04 | SEA | SNA | 15:49 | 18:17 | Delayed | Track > |
| Sep 03 | SEA | SNA | 16:45 | 19:07 | Delayed | Track > |
| Sep 02 | SEA | SNA | 14:56 | 17:20 | Landed | Track > |
| Sep 01 | SEA | SNA | 14:40 | 17:08 | Landed | Track > |
| Aug 31 | SEA | SNA | 16:12 | 18:46 | Delayed | Track > |
| Aug 30 | SEA | SNA | 14:58 | 17:14 | Landed | Track > |
| Aug 28 | SEA | SNA | 14:42 | 17:12 | Landed | Track > |
| Aug 27 | SEA | SNA | 15:08 | 17:37 | Landed Late | Track > |
| Aug 26 | SEA | SNA | 14:44 | 17:15 | Landed | Track > |
SkyWest Airlines flight OO 3999 links Seattle and Orange County, 1,576 km (979 mi) apart. The timetable allows 2 h 52 min, but the flight usually takes about 2 h 30 min, so it often makes up time. It is not flying today; the last flight, on 7 September 2026, landed on time.
About OO 3999
SkyWest Airlines Flight OO3999 connects Seattle, United States to Orange County, United States, taking off from Seattle Tacoma International Airport SEA and landing at Orange County John Wayne Airport SNA.
- Distance
- 1,576 km (979 mi)
- Typical flight time
- 2 h 30 min
- On time
- 6 of the last 7
- Average delay when late
- 15 min
OO 3999 FAQ
- How long is the OO3999 flight from Seattle to Orange County?
- The timetable allows 2 h 52 min. Seattle to Orange County is 1,576 km (979 mi).
- How often is OO3999 from Seattle to Orange County late?
- 1 of the last 7 flights arrived 15 or more minutes late; when late, by 15 minutes on average.
- When was the latest OO3999 flight from Seattle to Orange County?
- The latest OO3999 was the 14:30 (local time) departure from Seattle on 7 September 2026; it landed 17 minutes early.
- Which terminal does OO3999 use?
- It usually arrives at Terminal A at Orange County John Wayne Airport (SNA). Check the flight card above for today's terminal and gate.
- What other flight numbers does OO3999 have?
- Also listed as SKW3999 (SkyWest Airlines' ICAO code) and OO 3999.
OO3999 and Seattle SEA to Orange County SNA Flights
Flight OO3999 is code-shared by 2 airlines using the flight numbers KE3105, KL6284
Other flights departing from Seattle SEA: AS793, UA1762, EM4511
Other flights arriving at Orange County SNA: WN128, WN2984, WN178, WN2287
All flights connecting Seattle SEA to Orange County SNA.