OO3999 Flight Status SkyWest Airlines: Orange County to Seattle (SKW3999)
OO 3999 Orange County to Seattle Flight Status
Not scheduled today. Latest flight: September 7th, 2026 ; recent history is in the table below.
OO 3999 Flight Status & Schedule SkyWest Airlines Orange County to Seattle
| Date | From | To | Departure | Arrival | Status | Details |
|---|---|---|---|---|---|---|
| Sep 07 | SNA | SEA | 18:07 | 20:39 | Landed | Track > |
| Sep 04 | SNA | SEA | 19:14 | 21:29 | Landed Late | Track > |
| Sep 03 | SNA | SEA | 20:13 | 22:30 | Delayed | Track > |
| Sep 02 | SNA | SEA | 18:09 | 20:39 | Landed | Track > |
| Sep 01 | SNA | SEA | 18:07 | 20:26 | Landed | Track > |
| Aug 31 | SNA | SEA | 19:40 | 21:55 | Delayed | Track > |
| Aug 30 | SNA | SEA | 18:08 | 20:30 | Landed | Track > |
| Aug 28 | SNA | SEA | 18:15 | 20:40 | Landed | Track > |
| Aug 27 | SNA | SEA | 18:27 | 20:53 | Landed | Track > |
| Aug 26 | SNA | SEA | 18:10 | 20:30 | Landed | Track > |
SkyWest Airlines flight OO 3999 links Orange County and Seattle, 1,576 km (979 mi) apart. The timetable allows 2 h 48 min, but the flight usually takes about 2 h 25 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 Orange County, United States to Seattle, United States, taking off from Orange County John Wayne Airport SNA and landing at Seattle Tacoma International Airport SEA.
- Distance
- 1,576 km (979 mi)
- Typical flight time
- 2 h 25 min
- On time
- 7 of the last 8
- Average delay when late
- 39 min
- Usually departs from
- Terminal A
OO 3999 FAQ
- How long is the OO3999 flight from Orange County to Seattle?
- The timetable allows 2 h 48 min. Orange County to Seattle is 1,576 km (979 mi).
- How often is OO3999 from Orange County to Seattle late?
- 1 of the last 8 flights arrived 15 or more minutes late; when late, by 39 minutes on average.
- When was the latest OO3999 flight from Orange County to Seattle?
- The latest OO3999 was the 18:02 (local time) departure from Orange County on 7 September 2026; it landed 11 minutes early.
- Which terminal does OO3999 use?
- It usually leaves from 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 Orange County SNA to Seattle SEA Flights
Flight OO3999 is code-shared by 1 airline using the flight number VS4675
Other flights departing from Orange County SNA: WN178, XE722, WN4577, AS3248
Other flights arriving at Seattle SEA: WN555, UA2611, WN3323
All flights connecting Orange County SNA to Seattle SEA.